Give your aquarium plants the strong foundation they need with MasterLine RootMax – 250ml. This concentrated root fertilizer is specially formulated to provide essential nutrients directly to the root zone, ensuring healthier, faster, and more vibrant plant growth.
Ideal for rooted plants in aquascaping, RootMax supports the development of strong root systems, enhances nutrient uptake, and promotes lush foliage. Whether you’re maintaining a high-tech planted aquarium or a simple aquascape, this easy-to-use solution keeps your plants thriving.
Key Features:
250ml concentrated root fertilizer for aquariums
Provides vital nutrients directly to plant roots
Promotes stronger root systems and healthy growth
Encourages vibrant and lush foliage
Easy to use – simply dose as directed
Suitable for all planted aquariums
How to Use:Shake well before use. Add the recommended dosage directly into the aquarium substrate near plant roots for best results. Use regularly for continuous plant support.
Why Choose MasterLine RootMax?MasterLine is trusted by aquascapers worldwide for premium quality plant nutrition. With RootMax, your plants benefit from a reliable source of nutrients that ensures balanced growth and long-lasting health in your aquascape.
MasterLine All In One Boost – 200ml 500ml 1000ml 5000ml
Description:Give your aquarium plants the nutrients they need to thrive with MasterLine All In One Boost, a complete liquid fertilizer formulated for fast, healthy plant growth. This professional-grade plant supplement provides a balanced mix of essential macro and micronutrients to support vibrant colours, strong roots, and lush foliage in any freshwater aquarium.
Features:
Comprehensive formula containing nitrogen, phosphorus, potassium, iron, and trace elements
Designed for high-light, CO₂-injected aquariums and fast-growing plants
Enhances plant health, colour, and density
Prevents nutrient deficiencies and promotes steady growth
Easy to dose and highly concentrated for maximum efficiency
Safe for fish, shrimp, and other aquatic life
Directions for Use:Shake well before use. Dose daily or weekly according to plant needs and aquarium size. Adjust dosage based on plant density and lighting intensity for best results.
Available Sizes:
200ml
500ml
1000ml
5000ml
Recommended For:All planted freshwater aquariums requiring a complete, easy-to-use nutrient solution.
Why Choose MasterLine All In One Boost:✔ Balanced, high-quality formula trusted by aquascapers✔ Promotes vibrant, algae-free plant growth✔ Easy and consistent results for all experience levels
Masterline All In One Golden
Balanced all-in-one fertiliser for healthy growth and natural coloration
Masterline All In One Golden is a complete aquarium fertiliser designed to support steady, balanced plant growth while maintaining natural, vibrant colours across your aquascape. It provides a carefully optimised blend of macro and micro nutrients in one easy-to-use solution.
Ideal for aquarists who want consistent results without overcomplicating their fertilisation routine.
Available sizes
200ml
500ml
1000ml
5000ml
Select the size that suits your aquarium setup, whether you are maintaining a single display tank or multiple planted systems.
Balanced growth without extremes
Masterline All In One Golden is designed to provide a stable nutrient supply that supports healthy plant development without pushing excessive growth or demanding conditions.
It helps to:
Promote steady, controlled plant growth
Maintain natural green and golden tones
Improve plant strength and structure
Reduce the risk of nutrient imbalances
Complete all-in-one nutrition
This formula combines essential macro and micro nutrients into one balanced solution:
Nitrogen (N) for consistent growth
Phosphorus (P) for root and energy support
Potassium (K) for overall plant health
Iron (Fe) and trace elements for colour and balance
It simplifies your routine while still delivering reliable results.
Ideal for a wide range of aquariums
Masterline All In One Golden is suitable for:
Low to medium tech aquariums
Moderately planted tanks
Aquarists looking for a balanced, easy approach
Setups where stability is more important than rapid growth
It can also be used in higher-demand tanks with adjusted dosing.
Designed to work with the Masterline range
For best results, combine with other Masterline products:
Masterline Root Caps for substrate feeding
Masterline Carbo to support plant growth
Masterline Safe Water for water conditioning
Masterline Crystal Clear for maintaining water clarity
This creates a complete system that supports both plant health and overall aquarium stability.
Easy to dose
Add the recommended amount directly into your aquarium on a regular schedule. Consistent dosing helps maintain stable nutrient levels and prevents deficiencies.
For accuracy and convenience, use a dosing pump.
Product details
Available sizes: 200ml, 500ml, 1000ml, 5000mlSuitable for freshwater planted aquariumsDesigned for regular dosing
Who is this for
Ideal for beginners and experienced hobbyists alike who want a balanced, reliable fertiliser that supports healthy plants without the need for complex dosing strategies.
Masterline All In One Red
Premium complete fertiliser for vibrant red plants and balanced growth
Masterline All In One Red is a specialised all-in-one aquarium fertiliser designed to promote strong, healthy plant growth while enhancing red pigmentation in demanding aquatic plants. It provides a complete balance of macro and micro nutrients in a single solution, making plant care simple, efficient, and highly effective.
Perfect for aquascapers who want intense colours, especially in red stem plants like Rotala, Ludwigia, and Alternanthera species.
Available sizes
200ml
500ml
1000ml
5000ml
Choose the size that suits your aquarium setup, whether you are maintaining a single display tank or managing multiple planted systems.
Designed for red plant enhancement
This formula is specially developed to support vivid red coloration while maintaining strong overall plant growth. It helps plants achieve their full colour potential under proper lighting and CO₂ conditions.
Benefits include:
Enhanced red and pink pigmentation
Strong, balanced plant growth
Improved leaf structure and density
Reduced nutrient deficiencies
Complete all-in-one nutrition
Masterline All In One Red simplifies aquarium fertilisation by combining essential nutrients into one easy dosing solution:
Nitrogen (N) for healthy growth
Phosphorus (P) for root development and energy
Potassium (K) for overall plant strength
Iron (Fe) for vibrant red and green coloration
Essential trace elements for balanced plant health
Ideal for high-tech planted aquariums
This fertiliser is best suited for aquariums with strong lighting, CO₂ injection, and demanding plant species. It ensures plants receive everything they need for optimal growth and colour expression.
Designed to work with the Masterline range
For best results, combine with other Masterline products:
Masterline Root Caps for strong substrate feeding
Masterline Carbo for enhanced carbon availability
Masterline Safe Water for safe water preparation
Masterline Crystal Clear for improved water clarity
Together, they create a complete and stable planted aquarium system.
Easy to dose
Add the recommended amount directly into your aquarium on a regular schedule. Consistent dosing ensures stable nutrient levels and prevents deficiencies or algae issues.
For best results, use a dosing pump for accuracy and consistency.
Product details
Available sizes: 200ml, 500ml, 1000ml, 5000mlSuitable for freshwater planted aquariumsDesigned for regular dosing in planted tanks
Who is this for
Ideal for aquascapers and planted tank enthusiasts who want intense red plant coloration, professional-level growth, and a simplified fertilisation routine.
Bring out the best in your aquascape
If you want richer colours, healthier plants, and a fully balanced fertilisation system, Masterline All In One Red is the perfect solution for achieving a vibrant, professional-looking planted aquarium.
Masterline Root Caps – 10 pcs
Targeted root nutrition for healthy aquatic plants
Masterline Root Caps 10pk offers a convenient, smaller pack of slow-release root fertiliser designed to support strong, healthy plant growth directly from the substrate. Ideal for smaller aquariums or for trying out the Masterline range, these root caps deliver essential nutrients where root-feeding plants need them most.
Why root feeding matters
Many aquarium plants such as Amazon swords, Cryptocoryne, and Vallisneria absorb the majority of their nutrients through their roots. Over time, substrates can become depleted, leading to slow growth and poor plant health.
Masterline Root Caps help to:
Strengthen root systems
Improve plant growth and vitality
Enhance natural colour
Prevent nutrient deficiencies in the substrate
Slow-release nutrient formula
Each capsule contains a balanced blend of essential macro and micro nutrients, including nitrogen, phosphorus, potassium, iron, and trace elements.
The slow-release design ensures a steady supply of nutrients over time without negatively affecting water quality.
Perfect for smaller setups
This 10-piece pack is ideal for:
Small aquariums
Spot treatment for specific plants
Testing the product before upgrading to larger packs
Supplementing existing fertilisation routines
Designed to work with the Masterline range
For best results, combine with other Masterline products:
Masterline I or II for water column fertilisation
Masterline Carbo to support plant growth
Masterline Safe Water for water conditioning
Masterline Crystal Clear for water clarity
Root caps feed the substrate, while liquid fertilisers nourish the water column, creating a complete and balanced system.
Easy to use
Insert one capsule deep into the substrate near the roots of your plants. Space capsules based on plant density and replace every 6 to 8 weeks for consistent results.
Safe for fish and shrimp when used as directed.
Product details
Quantity: 10 capsulesSuitable for freshwater planted aquariumsDesigned for root-feeding plants
Who is this for
Ideal for beginners, nano tank owners, or aquascapers looking to target specific plants with additional root nutrition.
Simple and effective plant support
If you are looking for an easy way to improve plant health and root development, Masterline Root Caps 10pk is a practical and effective solution for any planted aquarium.
Masterline FilterMax
Advanced biological support for stronger filtration and a healthier aquarium
Masterline FilterMax is a high-performance biological enhancer designed to boost your aquarium’s filtration system. It supports the growth and activity of beneficial bacteria, helping your tank process waste more efficiently and maintain stable, healthy water conditions.
Ideal for both new setups and established aquariums, it plays a key role in keeping your ecosystem balanced and your water quality at its best.
Available sizes
3000ml
10000ml
Choose the size that suits your needs, whether you are maintaining a single aquarium or multiple systems.
Why biological filtration matters
A healthy aquarium depends on beneficial bacteria to break down harmful waste such as ammonia and nitrites. Without a strong biological system, these toxins can build up and stress or harm your fish.
Masterline FilterMax helps to:
Boost beneficial bacterial activity
Improve breakdown of waste and organic matter
Stabilise water parameters
Support a healthier, more resilient aquarium
Ideal for new and established aquariums
This product is especially useful for:
New tank setups and cycling
After filter cleaning or maintenance
Heavily stocked aquariums
Systems experiencing instability or water quality issues
It helps your filtration system recover quickly and operate at peak efficiency.
Designed to work with the Masterline range
For best results, use Masterline FilterMax alongside other Masterline products:
Masterline Safe Water for preparing tap water
Masterline II or All In One fertilisers for plant nutrition
Masterline Carbo to support plant growth
Masterline Root Caps for substrate feeding
Masterline Crystal Clear for water clarity
Together, these products create a complete system that supports both plant health and overall aquarium stability.
Easy to use
Add the recommended dose directly into your aquarium or filter. Regular use helps maintain a strong biological balance and improves long-term water quality.
Product details
Available sizes: 3000ml, 10000mlSuitable for freshwater aquariumsDesigned for biological filtration support
Who is this for
Ideal for beginners setting up a new aquarium, as well as experienced hobbyists looking to improve filtration performance and maintain stable water conditions.
Strengthen your aquarium from within
If you want cleaner water, healthier fish, and a more stable aquarium environment, Masterline FilterMax is an essential addition to your maintenance routine.
Masterline All In One Lean
Controlled fertilisation for balanced, algae-conscious plant growth
Masterline All In One Lean is a carefully balanced all-in-one fertiliser designed for aquariums that require a more controlled nutrient approach. It provides essential macro and micro nutrients in lower concentrations, making it ideal for maintaining healthy plant growth while reducing the risk of excess nutrients and algae.
Perfect for aquarists who prefer a lean dosing method or run lower-tech planted aquariums.
Available sizes
200ml
500ml
1000ml
5000ml
Choose the size that fits your aquarium setup, whether you are maintaining a single tank or multiple systems.
Why choose a lean fertilisation approach
In some aquariums, especially those with lower lighting, no CO₂, or lighter plant loads, full-strength fertilisation can lead to nutrient buildup and unwanted algae.
Masterline All In One Lean helps you:
Maintain steady, controlled plant growth
Reduce the risk of algae caused by excess nutrients
Prevent nutrient accumulation in the water column
Keep your aquarium stable and balanced
Complete nutrition in a lighter formula
This all-in-one solution still provides the essential nutrients your plants need, but in a more controlled ratio:
Nitrogen (N) for healthy growth
Phosphorus (P) for root and energy support
Potassium (K) for overall plant health
Iron (Fe) and trace elements for colour and balance
It delivers consistent results without overloading your system.
Ideal for low to medium demand aquariums
Masterline All In One Lean is best suited for:
Low-tech aquariums without CO₂
Tanks with moderate lighting
Aquariums with fewer or slower-growing plants
Hobbyists following a lean dosing method
It can also be used in high-tech setups where tighter nutrient control is preferred.
Designed to work with the Masterline range
For best results, combine with other Masterline products:
Masterline Root Caps for targeted root feeding
Masterline Carbo to support plant growth
Masterline Safe Water for water conditioning
Masterline Crystal Clear for maintaining water clarity
This combination ensures a balanced and stable aquarium environment.
Easy to dose
Add the recommended amount directly into your aquarium on a regular schedule. Consistent dosing helps maintain stable nutrient levels and supports long-term plant health.
For best accuracy, use a dosing pump.
Product details
Available sizes: 200ml, 500ml, 1000ml, 5000mlSuitable for freshwater planted aquariumsDesigned for regular dosing
Who is this for
Ideal for beginners, low-tech aquarium owners, and experienced aquascapers who prefer a more controlled and minimal nutrient approach.
Keep your aquarium balanced and healthy
If you want steady plant growth without the risk of over-fertilisation, Masterline All In One Lean offers a simple and effective solution for maintaining a clean, stable, and visually balanced aquarium.
Masterline II
Complete macro and micro nutrition for advanced plant growth
Masterline II is a comprehensive all-in-one fertiliser that provides both macro and micro nutrients required for strong, healthy plant growth in planted aquariums. Designed for aquariums with moderate to high plant demand, it simplifies dosing while delivering balanced nutrition for optimal results.
Available in multiple sizes, Masterline II is ideal for hobbyists who want a complete and efficient fertilisation solution.
Available sizes
200ml
500ml
1000ml
5000ml
Choose the size that best suits your aquarium setup, whether you are running a single tank or multiple high-demand systems.
Complete plant nutrition in one solution
Healthy aquatic plants require a combination of macro nutrients and trace elements to thrive. Masterline II combines everything into one easy-to-use formula, including:
Nitrogen (N) for strong, leafy growth
Phosphorus (P) for root and energy development
Potassium (K) for overall plant health
Iron (Fe) and trace elements for vibrant colour and balance
This balanced approach supports consistent growth, improved coloration, and stronger plant structure.
Ideal for high-demand planted aquariums
Masterline II is best suited for aquariums with medium to high lighting, CO₂ injection, or dense plant mass. It ensures your plants receive all essential nutrients without the need for multiple separate products.
It can also be used in simpler setups with adjusted dosing.
Designed to work with the Masterline range
For optimal results, use Masterline II as part of a complete aquarium system:
Masterline Carbo to provide a carbon source for plant growth
Masterline Root Caps for substrate feeding
Masterline Safe Water for water conditioning
Masterline Crystal Clear to maintain water clarity
Together, these products create a balanced ecosystem that supports long-term plant health and stability.
Easy to dose
Add the recommended daily or weekly dose directly into your aquarium. Consistent dosing will help maintain stable nutrient levels and prevent deficiencies.
For best results, pair with a dosing pump for accurate and repeatable application.
Product details
Available sizes: 200ml, 500ml, 1000ml, 5000mlSuitable for freshwater planted aquariumsDesigned for regular dosing
Who is this for
Ideal for aquascapers and hobbyists who want a complete fertilisation solution without the complexity of separate dosing. Perfect for planted tanks with higher nutrient demands.
Simplify your fertilisation routine
If you want strong growth, vibrant plants, and a complete nutrient solution in one bottle, Masterline II is the perfect choice for maintaining a thriving planted aquarium.
Masterline I
Essential micro nutrients for healthy, vibrant plant growth
Masterline I is a premium micro nutrient fertiliser designed to provide your aquarium plants with all the essential trace elements they need for strong, balanced growth. It plays a crucial role in maintaining vibrant colours, healthy leaves, and overall plant vitality in planted aquariums.
Available in multiple sizes, Masterline I is suitable for both beginner setups and advanced aquascapes.
Available sizes
200ml
500ml
1000ml
5000ml
Choose the size that matches your aquarium needs, whether you are maintaining a single display tank or multiple systems.
Why micro nutrients matter
While macro nutrients like nitrogen and potassium are important, plants also rely on trace elements in smaller amounts to function properly. Without them, plants can develop deficiencies, poor coloration, and slow growth.
Masterline I provides:
Iron (Fe) for rich, vibrant colours
Trace elements for balanced development
Support for healthy leaf structure
Improved overall plant health
Ideal for all planted aquariums
Masterline I is suitable for both low-tech and high-tech aquariums. It can be used on its own or combined with other fertilisers depending on your setup.
For tanks with higher plant demand, it is best used alongside a full fertilisation system.
Designed to work with the Masterline range
For optimal results, use Masterline I as part of a complete nutrient system:
Masterline II for full macro and micro nutrition
Masterline Carbo to provide a carbon source for plant growth
Masterline Root Caps for substrate feeding
Masterline Safe Water for water conditioning
Masterline Crystal Clear for maintaining water clarity
By combining water column feeding with substrate nutrition and proper conditioning, you create a stable and thriving environment for your plants.
Easy to dose
Add the recommended daily or weekly dose directly into your aquarium. Consistent dosing will help maintain stable nutrient levels and promote steady plant growth.
For best results, pair with a dosing pump for accurate and repeatable application.
Product details
Available sizes: 200ml, 500ml, 1000ml, 5000mlSuitable for freshwater planted aquariumsDesigned for regular dosing
Who is this for
Perfect for beginners starting their planted aquarium journey as well as experienced aquascapers looking to maintain precise nutrient control and achieve professional results.
Support healthier, more vibrant plants
If you want deeper colours, stronger growth, and a balanced planted aquarium, Masterline I is an essential part of your fertilisation routine.
Masterline Carbo
Liquid carbon for enhanced plant growth and healthier aquariums
Masterline Carbo is a highly effective liquid carbon supplement designed to support strong, healthy plant growth in planted aquariums. It provides an accessible source of carbon, one of the most essential elements for photosynthesis, helping your plants grow faster, fuller, and more vibrant.
Available in multiple sizes, Masterline Carbo is suitable for everything from small home aquariums to large, high-demand aquascapes.
Available sizes
200ml
500ml
1000ml
5000ml
Choose the size that best suits your aquarium needs, whether you are maintaining a single tank or multiple systems.
Why carbon supplementation matters
Carbon is a key building block for plant growth, but in many aquariums, natural carbon levels are limited. Without enough carbon, plants struggle to grow and can become weak or pale.
Masterline Carbo helps to:
Boost plant growth and density
Improve leaf colour and vitality
Support efficient photosynthesis
Help reduce algae by improving plant dominance
Ideal for all planted aquariums
This product is perfect for both low-tech and high-tech setups. It can be used as a standalone carbon source or alongside CO₂ injection to further enhance plant performance.
It is especially useful in tanks where CO₂ systems are not used, offering a simple and effective alternative.
Designed to work with the Masterline range
For best results, use Masterline Carbo as part of a complete fertilisation system:
Masterline I for essential micro nutrients
Masterline II for full macro and micro nutrition
Masterline Root Caps for substrate feeding
Masterline Safe Water for water conditioning
Masterline Crystal Clear for water clarity
Together, these products create a balanced environment that supports long-term plant health and aquarium stability.
Easy to dose
Add the recommended daily amount directly to your aquarium. Consistent dosing will provide the best results and help maintain steady plant growth.
Product details
Available sizes: 200ml, 500ml, 1000ml, 5000mlSuitable for freshwater planted aquariumsIdeal for daily dosing
Who is this for
Perfect for beginners looking for an easy way to improve plant growth, as well as experienced aquascapers aiming for lush, professional results.
Grow stronger, healthier plants
If you want faster growth, richer colours, and a more vibrant aquarium, Masterline Carbo is an essential addition to your daily routine.
Masterline Dosing Pump – 5ml
Fast and accurate dosing for larger aquariums
The Masterline Dosing Pump – 5ml is designed for aquarists who need to dose larger volumes quickly and accurately. Delivering approximately 5ml per pump, it simplifies routine dosing while ensuring consistency across your aquarium care routine.
Ideal for larger tanks or higher dosing requirements, this pump helps you save time without sacrificing precision.
Why accurate dosing matters
Maintaining stable nutrient levels is essential for a healthy aquarium. Inconsistent dosing can lead to poor plant growth, algae issues, and stressed livestock.
With the 5ml dosing pump, you can:
Deliver consistent doses every time
Reduce measuring errors
Speed up daily dosing routines
Maintain stable water parameters
Built for efficiency
This dosing pump is designed to fit Masterline bottles securely and provide smooth, reliable operation. The larger 5ml output per press makes it perfect for aquariums that require higher dosing volumes or for hobbyists managing multiple tanks.
Perfect for the Masterline range
The 5ml dosing pump pairs perfectly with all Masterline liquid products, including:
Masterline I for daily micro nutrients
Masterline II for complete fertilisation
Masterline Carbo for enhanced plant growth
Masterline Safe Water for water conditioning
Masterline Crystal Clear for water clarity
Using the correct dosing pump ensures you get accurate and consistent results from your entire Masterline system.
Easy to use
Simply replace your bottle cap with the dosing pump and press to dispense. Each full press delivers approximately 5ml, making it easy to follow your dosing schedule without additional tools.
Product details
Output per pump: 5mlCompatible with Masterline bottlesSuitable for aquarium fertilisers and liquid treatments
Who is this for
Ideal for aquarists with medium to large tanks, high-demand planted aquariums, or anyone looking to simplify and speed up their dosing routine.
Dose with confidence
If you want a faster, cleaner, and more efficient way to manage your aquarium dosing, the Masterline Dosing Pump – 5ml is the perfect solution for maintaining consistency and control.
Masterline Dosing Pump – 1.2ml
Accurate and effortless dosing for aquarium treatments and fertilisers
The Masterline Dosing Pump is designed to give you precise control when dosing liquids in your aquarium. Delivering a consistent 1.2ml per pump, it makes daily dosing simple, accurate, and mess-free.
Perfect for use with the full Masterline liquid range, this pump helps you maintain stable water parameters and consistent plant growth without the guesswork.
Why accurate dosing matters
Consistency is key in a healthy aquarium, especially in planted tanks. Overdosing or underdosing fertilisers and treatments can lead to poor plant growth, algae issues, or unstable conditions.
With the Masterline Dosing Pump, you can:
Dose the exact same amount every time
Avoid spills and waste
Maintain stable nutrient levels
Simplify your daily routine
Designed for convenience
This dosing pump fits Masterline bottles perfectly and is built for smooth, reliable operation. The 1.2ml output per press makes it easy to follow dosing schedules without needing measuring tools.
It is ideal for both beginners and experienced aquascapers who want a cleaner and more efficient way to manage their aquarium care routine.
Perfect match for the Masterline range
The dosing pump is the ideal companion for all Masterline liquid products, including:
Masterline I for daily micro nutrients
Masterline II for complete fertilisation
Masterline Carbo for enhanced plant growth
Masterline Safe Water for water conditioning
Masterline Crystal Clear for water clarity
Using a dosing pump ensures you get the most out of these products by applying them accurately and consistently.
Easy to use
Simply replace your bottle cap with the dosing pump and press to dispense. Each full press delivers approximately 1.2ml, making it easy to track your dosing.
Product details
Output per pump: 1.2mlCompatible with Masterline bottlesSuitable for aquarium fertilisers and liquid treatments
Who is this for
Ideal for aquarium hobbyists who want precise dosing, cleaner application, and a more professional approach to aquarium maintenance.
Take the guesswork out of dosing
If you want a simple, reliable way to dose your aquarium products with accuracy, the Masterline Dosing Pump is an essential upgrade to your setup.