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 Filter Start – 100ml | 250ml
Jumpstart your aquarium’s biological filtration with NTL AQ Filter Start. This bacterial starter helps establish healthy colonies of beneficial bacteria in your filter, ensuring a stable and safe environment for your fish and plants.
✅ Key Features
Boosts Biological Filtration – Quickly establishes beneficial bacteria in new or cleaned filters.
Reduces Toxic Build-Up – Breaks down harmful ammonia and nitrite, protecting fish.
Speeds Up Tank Cycling – Ideal for new aquariums or after major water changes.
Safe & Natural – 100% safe for fish, shrimp, snails, and plants.
Convenient Sizes – Available in 100ml and 250ml bottles.
🌿 Why Use NTL AQ Filter Start?
A healthy aquarium relies on a strong biological filter. By seeding your filter with beneficial bacteria, this product helps prevent dangerous spikes in ammonia and nitrite, keeping your aquarium balanced and stress-free for fish.
📏 Available Sizes
100ml – Perfect for small tanks or initial setup.
250ml – Great for larger aquariums and ongoing maintenance.
❓ FAQs
Do I need to add this after every water change?It’s recommended after setting up a new tank, filter cleaning, or large water changes.
How fast does it work?Bacteria begin working right away, but full stability develops over several days.
Is it safe for planted tanks?Yes – it won’t harm plants, shrimp, or snails.
👉 Give your aquarium the best start with NTL AQ Filter Start, available now in 100ml and 250ml at Aquatic Pets SA!
NTL AQ Tap Water Safe – 100ml | 250ml
Make your tap water safe for fish instantly with NTL AQ Tap Water Safe. This powerful water conditioner neutralises harmful substances commonly found in tap water, ensuring a healthy environment for your aquatic pets.
✅ Key Features
Removes Harmful Chemicals – Instantly neutralises chlorine, chloramine, and heavy metals.
Protects Fish & Plants – Creates safe, clean water for all aquarium inhabitants.
Stress-Reducing Formula – Helps fish adapt more easily during water changes.
Versatile Use – Suitable for freshwater and planted aquariums.
Easy Dosing – Available in 100ml and 250ml bottles.
🌿 Why Use NTL AQ Tap Water Safe?
Tap water contains chemicals that can be harmful to fish and shrimp. This conditioner makes your water safe immediately, giving you peace of mind during water changes or when setting up a new tank. It’s an essential product for any aquarist.
📏 Available Sizes
100ml – Ideal for small aquariums or occasional use.
250ml – Perfect for medium to large tanks and regular maintenance.
❓ FAQs
Can I use this during every water change?Yes – it’s safe to use with every partial or full water change.
Is it safe for shrimp and snails?Yes – the formula is gentle and safe for all aquarium inhabitants.
How quickly does it work?Almost instantly – water is safe to use immediately after adding.
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 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 pH 6–7.6 or pH 6-9 Test Kit Reagent
NTL Spare pH 6–7.6 is a replacement reagent for testing the pH of aquarium water. Maintaining the correct pH is essential for the health and wellbeing of aquarium fish, as different species thrive in different pH ranges. Regular testing helps ensure stable water conditions and allows you to identify changes before they become harmful. Based on the test kit version, this reagent measures pH within the 6.0–7.6 range with fine precision.
Key Features
Replacement reagent for pH testing.
Measures pH between 6.0 and 7.6 or 6 - 9.
Helps monitor aquarium water quality.
Suitable for routine freshwater aquarium testing.
Easy-to-use liquid drop test.
Benefits
Helps maintain stable water conditions for fish.
Allows early detection of pH changes.
Supports healthier aquarium environments.
Enables regular monitoring as part of routine aquarium maintenance.
Ensures continued use of your existing NTL pH test kit.
Understanding pH
pH measures how acidic or alkaline your aquarium water is. Different fish species have different pH requirements, so there is no single "correct" pH for every aquarium. Most tropical community aquariums are maintained between pH 7.0 and 8.0, but the ideal level depends on the species being kept.
What to Do if pH Is Incorrect
Adjust pH gradually—no more than 0.5 pH units every two days.
If your tap water has a suitable pH, partial water changes may help restore safe levels.
Check your aquarium's KH (Carbonate Hardness), as this helps stabilise pH.
Use appropriate pH-adjusting products or natural materials, depending on whether you need to raise or lower pH.
How to Use
Ensure the test tube is clean.
Fill the test tube with 5ml of aquarium water.
Add 5 drops of the pH reagent.
Replace the cap and shake thoroughly.
Compare the sample colour to the supplied colour chart to determine the pH level.
Specifications
Product: NTL Spare pH 6–7.6 Reagent
Application: Replacement reagent for pH water testing.
Suitable For: Freshwater aquariums.
Test Range: pH 6.0–7.6
Test Type: Liquid reagent colour comparison test.
Why Choose NTL Spare pH 6–7.6?
Regular pH testing is an essential part of aquarium care. NTL Spare pH 6–7.6 replacement reagent helps you accurately monitor water conditions, making it easier to maintain a stable environment where your fish can thrive.
NTL Spare Phosphate PO₄ Test Kit Reagent
NTL Spare Phosphate PO₄ is a replacement reagent designed for testing phosphate levels in aquarium water. Phosphate is an essential nutrient in aquatic systems, but excessive levels can contribute to unwanted algae growth and negatively affect aquarium balance.
Regular phosphate testing helps aquarists identify rising phosphate levels and maintain better water quality for fish, plants, and aquatic environments.
Key Features
Replacement reagent for phosphate (PO₄) testing.
Helps monitor phosphate levels in aquarium water.
Supports routine aquarium water quality management.
Helps identify conditions that may encourage algae growth.
Suitable for freshwater aquarium testing.
Benefits
Helps maintain balanced aquarium water conditions.
Allows early detection of rising phosphate levels.
Supports algae prevention by monitoring excess nutrients.
Helps improve aquarium maintenance routines.
Ensures continued use of your existing NTL phosphate test kit.
Understanding Phosphate (PO₄)
Phosphate is naturally introduced into aquariums through:
Fish food.
Fish waste.
Breakdown of uneaten food and organic matter.
Tap water used during water changes.
While phosphate is required in small amounts for biological processes and plant growth, elevated levels can contribute to nuisance algae growth and should be monitored regularly.
Recommended Phosphate Levels
Phosphate should be kept as low as practical while still supporting healthy aquarium life.
Planted aquariums may require some phosphate availability for plant growth.
Regular testing helps identify unwanted increases before they become a problem.
What to Do if Phosphate Levels Are High
Perform regular partial water changes using suitable water.
Test tap water to check whether phosphate is being introduced during water changes.
Reduce excess organic waste by maintaining good filtration and aquarium cleanliness.
Consider phosphate-removing products if required.
How to Use
Ensure the test tube is clean.
Add the required aquarium water sample to the test tube.
Add phosphate reagent according to the instructions supplied with your NTL phosphate test kit.
Mix gently and allow the test to develop.
Compare the colour of the sample with the supplied colour chart to determine phosphate levels.
Specifications
Product: NTL Spare Phosphate PO₄ Reagent
Application: Replacement reagent for phosphate water testing.
Suitable For: Aquarium water testing.
Test Type: Liquid reagent colour comparison test.
Why Choose NTL Spare Phosphate PO₄?
Keeping phosphate levels under control is an important part of aquarium maintenance. NTL Spare Phosphate PO₄ makes it easy to continue monitoring this important water parameter, helping you maintain a cleaner aquarium and reduce the risk of unwanted algae problems.
NTL Spare KH (Carbonate Hardness) Test Kit Reagent 10ml
NTL Spare KH is a replacement reagent for testing Carbonate Hardness (KH) in aquarium water. KH measures the level of carbonate and bicarbonate minerals that help stabilise pH and maintain a healthy aquatic environment.
Regular KH testing helps aquarists monitor water stability and make informed adjustments to maintain suitable conditions for their fish and plants.
Key Features
Replacement reagent for KH (Carbonate Hardness) testing.
Helps monitor aquarium water stability.
Measures carbonate and bicarbonate levels that influence pH buffering.
Suitable for routine aquarium water testing.
Easy-to-use liquid drop test method.
Benefits
Helps maintain stable aquarium water conditions.
Supports healthier fish by allowing better control of water chemistry.
Helps identify potential pH stability issues.
Useful for regular aquarium maintenance and monitoring.
Ensures continued use of your existing KH test kit.
Understanding KH
Carbonate Hardness (KH) refers to the amount of carbonate and bicarbonate minerals dissolved in water. These minerals help buffer the aquarium’s pH, reducing sudden changes that can stress fish and other aquatic life.
Maintaining an appropriate KH level helps create a more stable environment for aquarium inhabitants.
How to Use
Ensure the test tube is clean.
Add the required aquarium water sample to the test tube.
Add KH reagent according to the instructions provided with your test kit.
Mix between drops and monitor the colour change.
Use the result to determine the KH level of your aquarium water.
Specifications
Product: NTL Spare KH Reagent
Application: Replacement reagent for Carbonate Hardness (KH) testing.
Suitable For: Aquarium water testing.
Test Type: Liquid drop test.
Why Choose NTL Spare KH?
Stable water chemistry is essential for a healthy aquarium. NTL Spare KH provides a convenient replacement reagent to help you continue monitoring carbonate hardness and maintain the ideal conditions for your fish and aquatic plants.
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 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.