NTL NH3 Test – 40 Tests
The NTL NH3 Test Kit by NT Labs is a reliable and easy-to-use kit for measuring ammonia levels in freshwater and marine aquariums. Ammonia is highly toxic to fish and invertebrates, and monitoring its concentration is essential for maintaining a healthy aquarium environment.
With 40 accurate tests per kit, this product provides aquarists with a convenient solution for regular water quality monitoring. NT Labs NH3 Test ensures peace of mind by helping prevent ammonia spikes and keeping your aquatic pets safe.
Key Features
Measures ammonia (NH3/NH4⁺) levels in aquariums
40 tests per kit for long-term monitoring
Easy-to-use colour comparison method
Suitable for freshwater and marine aquariums
Helps maintain healthy water conditions for fish and invertebrates
Usage
Test your aquarium water regularly to prevent ammonia buildup
Follow kit instructions for accurate results
Ideal for new tank setups, weekly water checks, or after adding fish
Important Notes
Keep out of reach of children
Store in a cool, dry place
Read instructions carefully for accurate testing
The NTL NH3 Test – 40 Tests is an essential tool for any aquarist seeking to maintain safe, stable water conditions and ensure the wellbeing of their aquatic pets.
NTL Spare Ammonia (NH₃) Test Kit Reagent 10ml
NTL Spare Ammonia (NH₃) is a replacement reagent for testing ammonia levels in aquarium water. Ammonia is the primary waste product produced by fish and can also result from uneaten food and decaying organic matter. Although invisible, ammonia is highly toxic to aquarium fish, making regular testing essential for maintaining a healthy aquatic environment.
Use this reagent to accurately monitor ammonia levels and take action before they become harmful to your fish.
Key Features
Replacement reagent for ammonia (NH₃) water testing.
Helps monitor one of the most important aquarium water parameters.
Detects harmful ammonia levels before they become dangerous.
Suitable for routine freshwater and marine aquarium water testing.
Easy-to-use drop test method.
Benefits
Helps protect fish from harmful ammonia exposure.
Supports a healthy and stable aquarium environment.
Assists in identifying water quality issues early.
Encourages effective aquarium maintenance and filtration management.
Simple colour comparison for quick, reliable results.
Understanding Ammonia
Ammonia is produced naturally through:
Fish waste.
Uneaten fish food.
Decaying plants and organic matter.
Beneficial bacteria in your biological filter convert ammonia into the less toxic compound nitrite. However, any detectable ammonia is considered unsafe.
Recommended ammonia level:
0 mg/L (ppm) at all times.
What to Do if Ammonia is Detected
0.2 mg/L (ppm): Add a filter booster such as Filter Starter.
0.5–1.0 mg/L (ppm): Perform a 25% water change.
Above 1.0 mg/L (ppm): Perform a 50% water change.
Use an ammonia-removing filter media where appropriate.
If ammonia is present, also check other key water parameters including pH, KH, and nitrite.
How to Use
Ensure the test tube is clean.
Fill the test tube with 5ml of aquarium water.
Add 5 drops of Ammonia 1 and 5 drops of Ammonia 2 reagent.
Replace the cap and shake thoroughly.
Wait 10 minutes.
Compare the sample colour to the supplied colour chart with the test tube against the white reference area.
A yellow colour indicates 0 mg/L (ppm) ammonia. Any green tint indicates the presence of ammonia.
Specifications
Product: NTL Spare Ammonia (NH₃) Reagent
Application: Replacement reagent for ammonia water testing.
Suitable For: Freshwater and marine aquariums.
Test Method: Liquid drop test with colour comparison.
NTL NO3 Test – 30 Tests
The NTL NO3 Test Kit by NT Labs is an accurate and easy-to-use solution for measuring nitrate levels in freshwater and marine aquariums. Nitrate (NO3⁻) is a key indicator of water quality and, at high levels, can stress fish and inhibit plant growth. Regular monitoring helps maintain a healthy aquarium environment.
With 30 tests per kit, this product is ideal for routine water testing and ensuring nitrate levels remain within safe limits for both fish and plants. NT Labs NO3 Test provides reliable results for confident aquarium management.
Key Features
Measures nitrate (NO3⁻) levels in aquariums
30 tests per kit for ongoing monitoring
Simple colour comparison method for easy readings
Suitable for freshwater and marine aquariums
Helps maintain healthy water conditions for fish, shrimp, and plants
Usage
Test your aquarium water regularly to prevent nitrate buildup
Follow kit instructions carefully for accurate results
Ideal for weekly water checks, planted tanks, and after water changes
Important Notes
Keep out of reach of children
Store in a cool, dry place
Read instructions carefully for accurate testing
The NTL NO3 Test – 30 Tests is an essential tool for aquarists who want to maintain optimal water quality and ensure a thriving, healthy aquarium ecosystem.
NTL NO2 Test – 40 Tests
The NTL NO2 Test Kit by NT Labs is a precise and easy-to-use kit for measuring nitrite levels in freshwater and marine aquariums. Nitrite is highly toxic to fish and invertebrates, and regular monitoring is essential to maintain a safe and healthy aquatic environment.
With 40 tests per kit, this product allows aquarists to perform routine checks, ensuring nitrite levels remain within safe limits. NT Labs NO2 Test provides accurate results, helping you prevent stress or harm to your aquatic pets.
Key Features
Measures nitrite (NO2⁻) levels in aquariums
40 tests per kit for long-term monitoring
Easy colour comparison method for accurate readings
Suitable for freshwater and marine aquariums
Helps maintain healthy water conditions for fish and invertebrates
Usage
Test your aquarium water regularly to prevent nitrite spikes
Follow kit instructions carefully for accurate results
Ideal for new tank setups, weekly water checks, or after adding livestock
Important Notes
Keep out of reach of children
Store in a cool, dry place
Read instructions carefully before use for accurate testing
The NTL NO2 Test – 40 Tests is an essential tool for any aquarist seeking reliable monitoring of nitrite levels to ensure a safe and thriving aquarium.
NTL Pond Koi Ulcer Swab 100ml
NTL Pond Koi Ulcer Swab 100ml is a specialised topical treatment designed to support the care and recovery of koi and other ornamental pond fish affected by external ulcers, wounds, and bacterial infections. This easy-to-use solution is applied directly to the affected area, helping to disinfect wounds, reduce harmful bacteria, and promote the natural healing process.
Ideal for koi keepers, NTL Pond Koi Ulcer Swab is an essential addition to any pond health care kit, providing targeted treatment when your fish need it most.
Key Features
Targeted treatment for ulcers, sores, and external wounds.
Powerful antibacterial action helps reduce surface bacteria.
Supports the natural healing and regeneration of damaged tissue.
Easy-to-apply swab method for precise treatment.
Suitable for koi carp and other ornamental pond fish.
Convenient 100ml bottle.
Benefits
Helps disinfect ulcers and open wounds.
Assists in preventing further bacterial infection.
Supports faster recovery of damaged tissue.
Precise topical application reduces unnecessary product waste.
Ideal for routine fish health care and wound management.
Ideal For
Treating visible ulcers and open sores.
Supporting recovery from bacterial infections.
Caring for injured koi and ornamental pond fish.
Routine pond fish health maintenance.
How to Use
Carefully net the fish.
Gently dry the affected area.
Apply a small amount of the solution directly to the wound using a clean cotton swab.
Avoid contact with the fish's eyes and gills.
Return the fish to the pond once treatment is complete.
Specifications
Product: NTL Pond Koi Ulcer Swab
Size: 100ml
Application: Topical treatment for external ulcers, wounds, and bacterial infections.
Suitable For: Koi carp and other ornamental pond fish.
Why Choose NTL Pond Koi Ulcer Swab?
Prompt treatment of ulcers and wounds is essential for maintaining the health of koi and ornamental pond fish. NTL Pond Koi Ulcer Swab provides targeted antibacterial protection while supporting the natural healing process, helping your fish recover quickly and remain healthy throughout the year.
NTL Spare Nitrate (NO₃) Test Kit Reagent
NTL Spare Nitrate (NO₃) is a replacement reagent for testing nitrate levels in aquarium water. Nitrate is the final product of the aquarium's nitrogen cycle and is produced as beneficial bacteria break down ammonia and nitrite. While considerably less toxic than ammonia and nitrite, excessive nitrate can stress fish, encourage unwanted algae growth, and affect the overall health of your aquarium. (nt-labs.com)
Regular nitrate testing helps you maintain good water quality and determine when water changes or additional maintenance are required.
Key Features
Replacement reagent for nitrate (NO₃) water testing.
Helps monitor long-term aquarium water quality.
Detects nitrate levels quickly and accurately.
Suitable for routine freshwater aquarium testing.
Easy-to-use liquid drop test method.
Benefits
Helps maintain a healthy environment for aquarium fish.
Supports effective aquarium maintenance.
Assists in identifying when water changes are needed.
Helps reduce the risk of algae caused by elevated nitrate levels.
Ensures continued use of your existing NTL nitrate test kit.
Understanding Nitrate
Nitrate is produced when beneficial bacteria convert ammonia into nitrite and then into nitrate during the nitrogen cycle.
Although nitrate is much less toxic than ammonia or nitrite, levels should be kept as low as practical. As a general guide:
Below 40 mg/L (ppm) is suitable for most freshwater tropical aquariums.
Sensitive fish species may require even lower nitrate levels.
Regular water changes help prevent nitrate from building up over time. (nt-labs.com)
What to Do if Nitrate Is High
Perform regular partial water changes.
Avoid overfeeding your fish.
Remove uneaten food and decaying organic matter.
Maintain your filter and aquarium regularly.
Test your tap water if nitrate remains consistently elevated.
How to Use
Ensure the test tube is clean.
Fill the test tube with 5ml of aquarium water.
Add the nitrate reagents according to the instructions supplied with your NTL test kit.
Shake as directed and allow the test to develop.
Compare the sample colour with the supplied colour chart to determine the nitrate concentration. (nt-labs.com)
Specifications
Product: NTL Spare Nitrate (NO₃) Reagent
Application: Replacement reagent for nitrate water testing.
Suitable For: Freshwater aquariums.
Test Type: Liquid reagent colour comparison test.
Why Choose NTL Spare Nitrate (NO₃)?
Regular nitrate testing is an essential part of maintaining excellent water quality. NTL Spare Nitrate (NO₃) replacement reagent helps you accurately monitor nitrate levels, making it easier to keep your aquarium clean, balanced, and healthy for your fish.
NTL AQ Methylene Blue 100ml
NTL AQ Methylene Blue 100ml is a versatile aquarium treatment designed to help combat fungal infections, bacterial infections, and some external protozoan parasites in freshwater fish. Safe for use with fish eggs and fry, it is an excellent choice for protecting vulnerable fish during breeding and early development.
Ideal for use in a quarantine aquarium or treatment bath, Methylene Blue can also be added directly to aquarium water, used during fish transport, or carefully applied to external wounds when required.
Key Features
Helps treat fungal, bacterial, and certain external protozoan parasitic infections.
Safe for use with fish eggs and fry.
Suitable for quarantine tanks, treatment baths, and aquarium use.
Can be used during fish transportation.
May be applied directly to external wounds.
100ml bottle treats up to 900 litres.
Easy dosage instructions provided on the bottle label.
Benefits
Helps protect fish, eggs, and fry from common infections.
Assists in the treatment of wounds and damaged tissue.
Versatile application for a range of aquarium care situations.
Supports healthier fish during transport and recovery.
When to Use
Use NTL AQ Methylene Blue if your fish, fry, or eggs show signs of:
Fluffy, cotton wool-like fungal growths.
A grey, velvety film covering the body.
Excess mucus production.
Red open wounds or ulcers.
Missing scales.
Fin rot or deteriorating fins.
Eroded mouth tissue.
How to Use
Follow the dosage instructions provided on the bottle label.
For best results, use in a quarantine aquarium or treatment bath.
Can also be added to aquarium water, used during fish transport, or applied directly to external wounds as directed.
Specifications
Product: NTL AQ Methylene Blue
Size: 100ml
Treatment Capacity: Up to 900L
Suitable For: Freshwater aquarium fish, eggs, and fry
Directions: Dosage instructions included on the bottle label.
Important Information
Avoid overdosing, as this product may harm live plants and shrimp.
May affect beneficial bacteria in biological filtration systems.
Can stain skin, aquarium ornaments, clothing, and aquarium silicone.
Why Choose NTL AQ Methylene Blue?
NTL AQ Methylene Blue is a trusted aquarium treatment for a wide range of common fish health issues. Its versatility, effectiveness, and safe use with eggs and fry make it an essential addition to any aquarist's fish care and breeding supplies.
NTL AQ AxoSafe – 100ml
Specialised care support for axolotls and sensitive aquatic pets
NTL AQ AxoSafe is a carefully formulated aquarium care solution designed to support the health and well-being of axolotls and other sensitive aquatic animals. It helps create a safer water environment while reducing stress from harmful compounds commonly found in tap water and aquarium systems.
Supports a safer aquatic environment
Axolotls and similar species are highly sensitive to water quality changes. NTL AQ AxoSafe helps improve water conditions by supporting a more stable and controlled environment.
It helps to:
Reduce stress caused by poor water quality
Support overall gill and skin health
Improve aquarium stability for sensitive species
Assist in maintaining a balanced environment
Ideal for axolotl care
This product is specifically suited for:
Axolotl tanks
Sensitive amphibian setups
Freshwater systems requiring extra care
New tank preparation and routine maintenance
It is especially useful in setups where water stability is critical.
Complements proper aquarium husbandry
For best results, use alongside good aquarium practices:
Regular water changes
Proper filtration and flow control
Temperature stability
Careful feeding routines
A stable environment is key to long-term axolotl health.
Easy to use
Dose according to the recommended instructions based on tank volume. Can be used during water changes or routine maintenance.
Product details
Volume: 100mlSuitable for freshwater and axolotl systemsDesigned for sensitive aquatic species support
Who is this for
Ideal for axolotl keepers and aquarists who maintain sensitive aquatic species requiring stable, carefully managed water conditions.
Gentle support for sensitive aquatic life
NTL AQ AxoSafe provides simple, reliable support to help maintain a safer and more stable environment for axolotls and other delicate aquatic animals.
NTL Satus – Bacteria
Boost beneficial bacteria for a stable and healthy aquarium
NTL Satus Bacteria is a high-quality biological supplement designed to introduce and support beneficial bacteria in your aquarium. These bacteria are essential for breaking down harmful waste and maintaining a balanced, healthy aquatic environment.
Whether you are starting a new tank or maintaining an established system, this product helps strengthen your biological filtration and improve overall water quality.
Available sizes
100ml
250ml
500ml
Choose the size that best suits your aquarium setup, from smaller tanks to larger systems.
Why beneficial bacteria are important
A healthy aquarium relies on beneficial bacteria to process waste such as ammonia and nitrites, which can be harmful to fish if left untreated.
NTL Satus helps to:
Establish and maintain the nitrogen cycle
Break down harmful waste compounds
Improve water clarity and quality
Support a stable and balanced ecosystem
Ideal for new and existing aquariums
This product is especially useful for:
New tank setups and cycling
After water changes or filter cleaning
Heavily stocked aquariums
Tanks recovering from instability
It helps your aquarium recover quickly and maintain consistent performance.
Safe and effective formula
NTL Satus is safe for fish, shrimp, and plants when used as directed. It works naturally by enhancing the biological processes already present in your aquarium.
Complements your aquarium care routine
For best results, use alongside a complete aquarium care system:
Water conditioners to prepare tap water
Fertilisers to support plant growth
Maintenance products to keep water clear
A strong biological foundation is key to long-term aquarium success.
Easy to use
Add the recommended dose directly into your aquarium or filter. Regular use helps maintain a strong bacterial population and stable water conditions.
Product details
Available sizes: 100ml, 250ml, 500mlSuitable for freshwater aquariumsDesigned for biological filtration support
Who is this for
Ideal for beginners setting up their first aquarium and experienced hobbyists looking to improve filtration efficiency and water stability.
Build a stronger, healthier aquarium
If you want cleaner water, healthier fish, and a more stable tank, NTL Satus Bacteria is an essential addition to your aquarium maintenance routine.
This is a comprehensive water testing kit designed for people keeping fish in freshwater aquariums (and can also be useful in ponds). It’s often marketed with names like “6‑in‑1 Aquarium Water Test Kit – Up to 200 Combined Tests” because it lets you check six different water parameters with one kit.
What It Tests
The kit lets you measure six essential water quality factors that are key to fish and plant health:
Ammonia (NH₃‑N) – toxic to fish if levels rise
Nitrite (NO₂‑N) – also harmful at elevated levels
Nitrate (NO₃‑N) – less toxic but still important to manage
pH – acidity/alkalinity of the water
GH (General Hardness) – mineral hardness that affects fish health
KH (Carbonate Hardness) – buffering capacity that stabilizes pH
Up to 200 Combined Tests
The “200 tests” refers to the total number of individual parameter checks you can perform (not 200 of each test).
For example, if you test all six parameters each time, that uses six counts off the total.
How It Works
This is a liquid drop‑based kit — you add a measured amount of your aquarium water into a test tube, add a few drops of a reagent from the included bottles, and observe the resulting colour change.
You then compare the colour to the included chart to read the water parameter value.
The kit includes colour charts, labelled test tubes, an integrated rack, and colour‑coded stickers to keep things organised and avoid mix‑ups.
Why Hobbyists Like It
More accurate than simple test strips: Drop tests generally give more precise and reliable readings.
Covers the basics: It includes all the key freshwater parameters most aquarists need to monitor regularly.
Good for routine maintenance: Useful for checking water before water changes, after adding new fish, or when cycling a tank.
Tips for Use
Read instructions carefully: Good lighting and careful colour comparison help ensure accurate results.
Results are expressed in nitrogen terms: For ammonia, nitrite, and nitrate, results are reported as the nitrogen portion (NH₃‑N, NO₂‑N, NO₃‑N), which aligns with standard safe level recommendations in fishkeeping.
Store the kit in a cool, dry place and check expiry dates — reagent chemicals can degrade over time, affecting accuracy. (Anecdotally, liquid kits can still work past expiry but accuracy may vary.)
NTL KH & GH Test – 80 Tests
The NTL KH & GH Test Kit by NT Labs is a comprehensive kit for measuring both carbonate hardness (KH) and general hardness (GH) in freshwater aquariums. Maintaining proper water hardness is essential for fish health, plant growth, and overall aquarium stability.
With 80 tests per kit, this product provides long-term monitoring for both KH and GH, allowing aquarists to manage water conditions accurately. The easy-to-use colour comparison method ensures quick and reliable results for every water check.
Key Features
Measures carbonate hardness (KH) and general hardness (GH)
80 tests per kit for long-term monitoring
Simple colour comparison method for accurate readings
Suitable for freshwater aquariums, including planted tanks and fish-only setups
Helps maintain stable water conditions for fish, shrimp, and aquatic plants
Usage
Test your aquarium water regularly to maintain optimal hardness levels
Follow kit instructions carefully for accurate results
Ideal for new tank setups, routine water checks, and maintaining plant and fish health
Important Notes
Keep out of reach of children
Store in a cool, dry place
Read instructions carefully for accurate testing
The NTL KH & GH Test – 80 Tests is an essential tool for aquarists who want precise monitoring of water hardness to ensure a stable and thriving aquarium environment.
NTL AQ Anti-Ulcer & Finrot – 100ml | 250ml
Protect your aquarium fish from harmful bacterial infections with NTL AQ Anti-Ulcer & Finrot. This effective treatment helps combat ulcers, fin rot, and tail rot – common diseases that can weaken or even kill fish if left untreated. Designed for freshwater aquariums, it supports rapid healing and helps restore your fish to full health.
✅ Key Features
Treats Bacterial Infections – Targets ulcers, fin rot, and tail rot.
Promotes Healing & Recovery – Encourages tissue repair and reduces risk of spreading.
Safe for Freshwater Fish – Gentle, effective, and easy to use.
Works in Community Tanks – Suitable for most freshwater aquarium setups.
Two Convenient Sizes – Choose 100ml for small to medium tanks or 250ml for larger aquariums.
🌿 Why Use Anti-Ulcer & Finrot?
Poor water quality, stress, and minor injuries can lead to bacterial infections like fin rot and ulcers. These conditions can spread quickly if untreated. NTL AQ Anti-Ulcer & Finrot is a trusted solution that helps stop the infection, improve fish health, and restore balance in your tank.
📏 Available Sizes
100ml – Ideal for small to medium aquariums.
250ml – Perfect for larger tanks or repeated treatments.
❓ FAQs
Will this affect my plants or filter bacteria?Safe when used as directed – remove activated carbon during treatment.
Can I use this with shrimp or snails?Not recommended – invertebrates may be sensitive.
How quickly will my fish recover?Many fish show improvement within days, though completing the full course ensures better results.
👉 Keep your fish healthy, infection-free, and thriving with NTL AQ Anti-Ulcer & Finrot, available in 100ml and 250ml at Aquatic Pets SA!
NTL AQ Aquarium Cleaner – 100ml
Keep your aquarium water crystal clear and your fish healthy with NTL AQ Aquarium Cleaner. This trusted treatment helps break down organic waste, reduce harmful build-ups, and improve water clarity – giving your aquarium a fresher, cleaner look.
✅ Key Features
Improves Water Clarity – Helps maintain clean, sparkling water.
Breaks Down Waste – Reduces organic build-up and sludge.
Supports Fish Health – Creates a safer, stress-free environment.
Easy to Use – Simple dosing with measurable results.
100ml Bottle – Perfect size for small to medium aquariums.
🌿 Why Use NTL AQ Aquarium Cleaner?
Fish waste, leftover food, and organic matter can cause cloudy water, bad odours, and stress for your aquatic life. With regular use, NTL AQ Aquarium Cleaner helps restore balance, making maintenance easier and keeping your tank looking its best.
📦 Size Available
100ml – Compact and effective for regular use.
❓ FAQs
Is this safe for plants and fish?Yes – safe for use in freshwater aquariums when dosed correctly.
Will this replace water changes?No – it supports water quality but regular water changes are still essential.
How often should I use it?Use weekly or as needed to maintain clear and healthy water.
👉 Make aquarium care simple and effective with NTL AQ Aquarium Cleaner – 100ml, available at Aquatic Pets SA!
NTL Spare Nitrite (NO₂) Test Kit Reagent
NTL Spare Nitrite (NO₂) is a replacement reagent for testing nitrite levels in aquarium water. Nitrite is produced as beneficial filter bacteria break down toxic ammonia during the nitrogen cycle. Although less toxic than ammonia, nitrite is still highly harmful to fish and should always remain at 0 mg/L (ppm) in a healthy aquarium.
Regular testing helps identify water quality issues early, allowing you to take corrective action before nitrite reaches harmful levels.
Key Features
Replacement reagent for nitrite (NO₂) water testing.
Helps monitor one of the most important aquarium water parameters.
Detects harmful nitrite levels quickly and accurately.
Suitable for routine freshwater aquarium testing.
Easy-to-use liquid drop test method.
Benefits
Helps protect fish from harmful nitrite exposure.
Supports a healthy and stable biological filter.
Allows early detection of water quality problems.
Encourages proactive aquarium maintenance.
Ensures continued use of your existing NTL nitrite test kit.
Understanding Nitrite
Nitrite is produced when beneficial bacteria convert toxic ammonia into nitrite as part of the aquarium's nitrogen cycle. A second group of beneficial bacteria then converts nitrite into the much less harmful nitrate.
While this is a normal biological process, any detectable nitrite is considered unsafe and should be addressed immediately.
What to Do if Nitrite Is Detected
0.25–0.5 mg/L (ppm): Add a filter booster such as Filter Starter.
1.0 mg/L (ppm): Perform a 25% water change.
Above 1.0 mg/L (ppm): Perform a 50% water change.
Check other important water parameters, particularly ammonia and pH.
Ensure your biological filter is functioning correctly.
How to Use
Ensure the test tube is clean.
Fill the test tube with 5ml of aquarium water.
Add 5 drops of the Nitrite reagent.
Replace the cap and shake thoroughly.
Wait 2 minutes.
Compare the sample colour with the supplied colour chart.
A colourless sample indicates 0 mg/L (ppm) nitrite. Any hint of pink indicates the presence of nitrite. Ignore any colour that develops after the initial 2-minute reading.
Specifications
Product: NTL Spare Nitrite (NO₂) Reagent
Application: Replacement reagent for nitrite water testing.
Suitable For: Freshwater aquariums.
Test Type: Liquid reagent colour comparison test.
Why Choose NTL Spare Nitrite (NO₂)?
Routine nitrite testing is essential for maintaining a healthy aquarium, especially in new or recently disturbed systems. NTL Spare Nitrite (NO₂) replacement reagent helps you accurately monitor this critical water parameter, allowing you to protect your fish and maintain a stable, well-balanced aquarium.
NTL Spare GH (General Hardness) Test Kit Reagent
NTL Spare GH is a replacement reagent for testing the General Hardness (GH) of aquarium water. GH measures the total concentration of dissolved minerals, such as calcium and magnesium, which play an important role in the health of aquarium fish and plants. Knowing your aquarium's GH helps ensure you maintain water conditions suited to the species you keep.
Regular GH testing is an essential part of maintaining a stable and healthy freshwater aquarium.
Key Features
Replacement reagent for GH (General Hardness) water testing.
Measures dissolved mineral levels in aquarium water.
Suitable for freshwater aquarium monitoring.
Simple drop-count test with an easy colour change.
Helps maintain ideal water conditions for different fish species.
Benefits
Allows accurate monitoring of aquarium water hardness.
Helps create the correct environment for soft or hard water fish.
Supports fish health by maintaining stable water chemistry.
Easy-to-read results using a colour change method.
Ideal for routine aquarium maintenance.
Understanding GH
General Hardness (GH) measures the total amount of dissolved minerals in the water. The more minerals present, the harder the water.
Different fish species require different GH levels:
Soft water species: Approximately 3–6 dGH
Hard water species: Approximately 10–15 dGH
One degree of GH (1 dGH) is equal to 17.8 ppm (as CaCO₃).
What to Do if GH is Incorrect
Test your tap water to determine its natural GH.
If GH is too high, consider using reverse osmosis (RO) water to reduce hardness.
If GH is too low, calcium carbonate-based rocks, such as ocean rock, can help gradually increase mineral hardness.
How to Use
Ensure the test tube is clean.
Fill the test tube with 5ml of aquarium water.
Add 2 drops of GH A reagent and mix. The sample should turn dark pink.
Add GH B reagent one drop at a time, mixing between each drop.
Count the number of drops required for the sample to change from pink to blue.
The number of drops used equals the GH value in dGH.
If the first drop of GH B turns the sample blue, the GH is below 1 dGH, indicating very soft water.
Specifications
Product: NTL Spare GH Reagent
Application: Replacement reagent for General Hardness (GH) water testing.
Suitable For: Freshwater aquariums.
Measurement Range: Results expressed in dGH (degrees of General Hardness).
Test Method: Liquid drop-count colour change test.
Why Choose NTL Spare GH?
Maintaining the correct General Hardness is essential for the long-term health of your aquarium's inhabitants. NTL Spare GH replacement reagent makes it easy to monitor mineral levels accurately, helping you provide the ideal water conditions for your fish and maintain a stable aquatic environment.
NTL AQ Plant Boost 100ml
NTL AQ Plant Boost 100ml is a daily plant nutrient supplement designed to promote healthy, vibrant growth in live aquarium plants. While aquarium lighting provides the energy plants need for photosynthesis, essential nutrients in the water are quickly depleted as plants grow. Plant Boost helps replenish these nutrients, supporting lush, thriving aquatic plants.
Suitable for regular use, Plant Boost is an easy way to maintain a healthy planted aquarium and encourage strong, consistent plant growth.
Key Features
Daily nutrient supplement for live aquarium plants.
Replenishes essential nutrients consumed by growing plants.
Supports healthy, vibrant plant growth.
Simple to use as part of your regular aquarium maintenance routine.
Suitable for planted freshwater aquariums.
Convenient 100ml bottle.
Benefits
Encourages healthier, stronger aquatic plants.
Helps maintain nutrient levels in planted aquariums.
Supports vibrant foliage and continuous plant growth.
Complements aquarium lighting for optimal plant health.
Easy daily dosing for ongoing care.
How to Use
Add Plant Boost daily as directed on the product label.
For best results, ensure your aquarium plants receive 12–15 hours of light per day.
Use as part of a regular planted aquarium maintenance routine.
Specifications
Product: NTL AQ Plant Boost
Size: 100ml
Application: Nutrient supplement for live freshwater aquarium plants
Directions: Use daily as directed on the label.
Why Choose NTL AQ Plant Boost?
Healthy aquarium plants need more than just light to thrive—they also require a steady supply of essential nutrients. NTL AQ Plant Boost helps replace nutrients that are naturally used up during plant growth, making it easy to maintain a lush, vibrant planted aquarium every day.
NTL AQ AxoStart Bacteria 100ml
The NTL AQ AxoStart Bacteria 100ml is a specialised beneficial bacteria solution designed to help maintain a safe and stable environment for axolotls. It works by breaking down harmful waste and rapidly establishing a healthy biological filter in your aquarium, ensuring cleaner and safer water conditions.
AxoStart helps convert toxic ammonia and nitrite into less harmful nitrate, reducing stress on your axolotls and supporting a balanced aquatic ecosystem.
Key Features
Colourless, pure blend of beneficial filter bacteria
Breaks down axolotl waste efficiently
Detoxifies ammonia and nitrite into safer nitrate
Helps establish and stabilise biological filtration
Suitable for freshwater axolotl aquariums
Easy-to-use liquid formula
Benefits
Promotes a safer, healthier environment for axolotls
Reduces toxic waste buildup in the aquarium
Helps prevent stress during tank changes or new setups
Speeds up filter cycling in new aquariums
Supports long-term water quality stability
How to Use
Shake well before use.
Add to a new aquarium to help kick-start the biological filter.
Use when adding new axolotls, after filter cleaning, or after water changes.
Dose at any sign of stress or water quality issues.
Follow aquarium size guidelines on packaging for correct dosage.
Specifications
Brand: NTL AQ
Product: AxoStart Bacteria
Volume: 100ml
Type: Beneficial bacteria / biological conditioner
Suitable For: Axolotl and freshwater aquariums
NTL Marine Lab Multi Test
Complete water testing solution for marine aquariums
NTL Marine Lab Multi Test is a reliable and easy-to-use water testing kit designed specifically for marine aquariums and reef systems. It helps you accurately monitor key water parameters so you can maintain a stable, healthy environment for fish, corals, and invertebrates.
Regular testing is essential in marine systems where water stability directly impacts livestock health.
Why water testing is important
Marine aquariums are sensitive systems where small changes can quickly affect coral and fish health. Testing helps you stay ahead of problems before they become serious.
This kit helps you monitor and manage:
Ammonia (NH₃)
Nitrite (NO₂)
Nitrate (NO₃)
pH levels
General water stability indicators
Helps maintain a stable reef environment
By regularly testing your water, you can:
Prevent toxic buildup in your aquarium
Maintain optimal conditions for corals and fish
Identify issues early before livestock is affected
Improve long-term system stability
Ideal for marine and reef aquariums
NTL Marine Lab Multi Test is suitable for:
Reef aquariums
Fish-only marine systems
Frag tanks and coral systems
New tank cycling and established setups
It is an essential tool for both beginners and experienced reef keepers.
Supports better aquarium management
Accurate water testing allows you to make informed decisions about:
Water changes
Filtration adjustments
Dosing routines
Livestock stocking levels
This leads to a more stable and successful marine system.
Easy to use
The kit is designed for straightforward testing with clear results, allowing hobbyists to quickly understand their water conditions and take action when needed.
Product details
Product type: Marine water testing kitSuitable for: Marine and reef aquariumsUse: Regular water parameter monitoring
Who is this for
Ideal for marine aquarium hobbyists, reef keepers, and professionals who want accurate and consistent water testing for better aquarium control.
Keep your marine system stable and healthy
NTL Marine Lab Multi Test gives you the confidence to maintain perfect water conditions, helping your reef thrive and your livestock stay healthy.
NTL AQ AxoTonic – 500g
Mineral and health support for axolotls and sensitive aquatic species
NTL AQ AxoTonic is a specialised mineral and wellness support formula designed to promote overall health, stability, and recovery in axolotls and other sensitive aquatic animals. It helps improve water quality balance while supporting essential physiological functions for long-term well-being.
The 500g size is ideal for regular use in medium to large axolotl setups or multi-tank systems.
Supports overall health and vitality
Axolotls require stable mineral balance and clean water conditions to thrive. AxoTonic helps support their natural biological needs in a controlled aquarium environment.
It helps to:
Support overall immune and stress response
Improve mineral balance in the aquarium
Assist with recovery and general vitality
Promote healthier long-term conditions
Ideal for axolotl and sensitive species care
This product is suitable for:
Axolotl tanks
Sensitive amphibian setups
Freshwater systems requiring added stability
Routine wellness support in established aquariums
It is especially useful in long-term care routines where consistency is key.
Complements responsible aquarium management
For best results, use alongside proper care practices:
Regular water changes
Stable temperature control
Gentle filtration with low flow
Careful feeding routines
A stable environment enhances the effectiveness of ongoing care.
Easy to use
Dose according to the recommended instructions based on tank volume. Can be used as part of regular maintenance or long-term support routines.
Product details
Weight: 500gSuitable for axolotl and sensitive freshwater systemsDesigned for mineral and health support
Who is this for
Ideal for axolotl keepers and aquarists who want to maintain stable, healthy conditions and support long-term well-being of sensitive aquatic species.
Long-term care for sensitive aquatic life
NTL AQ AxoTonic provides reliable, ongoing support to help maintain balance, stability, and overall health in axolotl and delicate aquatic environments.
NTL AQ AxoCure – 100ml
Targeted treatment support for axolotls and sensitive aquatic animals
NTL AQ AxoCure is a specialised care solution designed to support the treatment and recovery of axolotls and other sensitive aquatic species. It helps assist in managing common health stressors while supporting a cleaner, more stable aquatic environment during recovery.
Supports recovery and overall health
Axolotls require stable, clean water conditions to recover effectively from stress or health issues. AxoCure is formulated to help support this process by improving overall tank conditions during treatment periods.
It helps to:
Support recovery from stress-related conditions
Assist in maintaining cleaner water during treatment
Reduce environmental strain on sensitive species
Promote a more stable aquarium environment
Ideal for axolotl care
This product is suitable for:
Axolotl tanks under stress or recovery
Sensitive amphibian and aquatic setups
Quarantine systems
General supportive care routines
It is especially useful when maintaining strict water quality control is essential.
Complements responsible aquarium care
For best results, combine with proper husbandry practices:
Regular partial water changes
Stable temperature control
Gentle filtration and low flow
Careful feeding routines
A stable environment is essential for effective recovery.
Easy to use
Dose according to the recommended instructions based on tank volume. Use during routine care or when supporting recovery conditions.
Product details
Volume: 100mlSuitable for axolotl and sensitive freshwater systemsDesigned for supportive care use
Who is this for
Ideal for axolotl keepers and aquarists who maintain sensitive aquatic species and want reliable support for stable, healthy conditions.
Gentle support when it matters most
NTL AQ AxoCure provides practical support for maintaining a stable environment and assisting sensitive aquatic animals during periods of stress or recovery.
NTL AQ Liquid Filter
Biological filtration support for a cleaner, more stable aquarium
NTL AQ Liquid Filter is a powerful biological support solution designed to strengthen your aquarium’s natural filtration system. It helps boost beneficial bacteria that break down waste, improving water quality and overall stability in both new and established aquariums.
Available in multiple sizes, it is ideal for routine maintenance or boosting filtration performance when needed.
Available sizes
100ml
250ml
Choose the size that best suits your aquarium setup, whether for small tanks, regular maintenance, or larger systems needing ongoing support.
Strengthens biological filtration
A stable aquarium depends on beneficial bacteria to process harmful waste such as ammonia and nitrite. Without enough biological activity, water quality can quickly decline.
NTL AQ Liquid Filter helps to:
Boost beneficial bacterial growth
Improve breakdown of organic waste
Support ammonia and nitrite reduction
Stabilise water conditions
Ideal for all aquarium stages
This product is especially useful for:
New tank cycling
After filter cleaning or maintenance
Heavily stocked aquariums
Tanks experiencing instability or cloudy water
It helps speed up biological balance and keeps your system performing efficiently.
Supports a healthier ecosystem
By enhancing biological filtration, NTL AQ Liquid Filter helps create a more stable environment for fish, plants, and beneficial bacteria to thrive together.
Complements your aquarium care routine
For best results, use alongside:
NTL AQ Optimus for safe water preparation
NTL AQ Satus Bacteria for added bacterial support
Regular water changes
Mechanical filtration for debris removal
Together, these products form a complete system for long-term aquarium stability.
Easy to use
Add the recommended dose directly into your aquarium or filter. Regular use helps maintain strong biological activity and consistent water quality.
Product details
Available sizes: 100ml, 250mlSuitable for freshwater aquariumsDesigned for biological filtration support
Who is this for
Ideal for beginners setting up new aquariums and experienced aquarists looking to improve filtration efficiency and maintain stable water conditions.
NTL AQ Anti-Fluke & Wormer – 20ml
Targeted treatment for flukes and internal worms
NTL AQ Anti-Fluke & Wormer is a specialised treatment designed to effectively control and eliminate common parasites such as flukes and internal worms in freshwater aquarium fish. It works to improve fish health by targeting parasites that can weaken and stress your livestock.
Ideal for both treatment and preventative care, especially when introducing new fish into your aquarium.
Helps treat common parasite issues
Parasites such as flukes and internal worms can be difficult to detect but can significantly impact fish health if left untreated.
This treatment helps to:
Control gill and skin flukes
Treat internal worms
Reduce irritation, flashing, and stress
Improve overall fish condition
Supports recovery and fish health
The formula is designed to assist fish during parasite infestations by reducing stress and helping them recover more effectively when used as directed.
When to use
This product is ideal for:
Fish showing signs of parasite infection
Quarantine tanks for new fish
Preventative treatment before introducing new livestock
Aquariums with recurring parasite issues
Complements your aquarium care routine
For best results, use alongside good maintenance practices:
Regular water changes
Proper water conditioning
Strong biological filtration
Maintaining stable water quality helps prevent future infestations.
Easy to use
Dose according to the recommended instructions. Ensure good aeration during treatment and monitor your fish closely for improvement.
Product details
Volume: 20mlSuitable for freshwater aquariumsDesigned for treating flukes and internal worms
Who is this for
Ideal for aquarium hobbyists looking for an effective and easy-to-use solution to manage parasites and maintain a healthy aquarium.
Protect your fish from hidden parasites
Flukes and worms can go unnoticed until they become a serious issue. NTL AQ Anti-Fluke & Wormer provides a practical and effective solution to keep your fish healthy and your aquarium stable.
NTL AQ Anti-Parasite – 100ml
Effective treatment for external parasites in freshwater aquariums
NTL AQ Anti-Parasite is a targeted treatment designed to help control and eliminate common external parasites affecting aquarium fish. It works quickly to reduce parasite activity while supporting fish health and recovery.
Ideal for use at the first signs of infection, this treatment helps protect your livestock and prevent the spread of parasites within your aquarium.
Helps treat common parasite issues
External parasites can weaken fish, cause stress, and spread rapidly if left untreated.
NTL AQ Anti-Parasite helps manage:
White spot (Ich)
Skin and gill parasites
Flashing and scratching behaviour
Visible irritation or stress
Early treatment is key to protecting your fish and maintaining a healthy aquarium.
Supports recovery and reduces stress
The formula is designed to help fish recover during parasite outbreaks while maintaining a safer environment. It works effectively without disrupting your aquarium when used as directed.
When to use
This product is ideal for:
Fish showing signs of parasites
New fish in quarantine
Community tanks experiencing outbreaks
Preventative care when introducing new livestock
Complements your aquarium care routine
For best results, use alongside a proper maintenance routine:
Regular water changes
Water conditioning to remove harmful chemicals
Strong biological filtration support
Maintaining clean, stable water conditions helps prevent future outbreaks.
Easy to use
Dose according to the recommended instructions. Ensure good aeration during treatment and monitor your fish closely for improvement.
Product details
Volume: 100mlSuitable for freshwater aquariumsDesigned for parasite treatment
Who is this for
Ideal for aquarium hobbyists looking for a reliable and easy-to-use solution to treat parasite infections and protect fish health.
Protect your fish from parasites
If you notice signs of parasites, quick action is essential. NTL AQ Anti-Parasite provides a practical and effective solution to restore fish health and keep your aquarium stable.
NTL PO4 Test – 40 Tests
The NTL PO4 Test Kit by NT Labs is a reliable and easy-to-use solution for measuring phosphate levels in freshwater and marine aquariums. Phosphate (PO4³⁻) is a key nutrient that, at elevated levels, can promote algae growth and affect water quality. Regular monitoring helps maintain a balanced, healthy aquarium environment.
With 40 tests per kit, aquarists can perform routine water checks and ensure phosphate levels remain within safe limits. The colour comparison method provides quick and accurate readings for confident aquarium management.
Key Features
Measures phosphate (PO4³⁻) levels in aquariums
40 tests per kit for long-term monitoring
Simple colour comparison method for easy readings
Suitable for freshwater and marine aquariums
Helps maintain healthy water conditions and control algae growth
Usage
Test aquarium water regularly to monitor phosphate levels
Follow kit instructions carefully for accurate results
Ideal for planted tanks, reef setups, and routine water quality checks
Important Notes
Keep out of reach of children
Store in a cool, dry place
Read instructions carefully for accurate testing
The NTL PO4 Test – 40 Tests is an essential tool for aquarists seeking precise phosphate monitoring to maintain a healthy, thriving aquarium ecosystem.
