Seachem Purigen – Premium Water Polishing Resin
seachem purigen is a high-capacity synthetic filtration resin designed to remove dissolved organics from aquarium water, resulting in exceptional clarity and improved water quality. unlike carbon, purigen targets nitrogenous waste before it breaks down, helping reduce ammonia, nitrite and nitrate load on the system.
it can be used in freshwater and marine aquariums and is safe for plants and fish. purigen lasts a long time and can be regenerated multiple times with a simple bleach-based process, making it one of the most cost-effective water polishing options available.
what it does
removes dissolved organics for crystal-clear water
reduces waste load and improves water quality
safe for freshwater and marine aquariums
can be regenerated and reused multiple times
available sizes (select your size above)
purigen 100 ml
purigen 250 ml
purigen 500 ml
Seachem Reef Advantage Calcium – 250 g - 4 kg
Description
A high-purity, advantage calcium supplement for reef aquariums, formulated to support strong coral skeletal growth and healthy invertebrate development. Calcium is a critical element for SPS, LPS, and soft corals, as well as coralline algae. Regular supplementation helps maintain optimal calcium levels, ensuring vibrant coral growth and a stable reef environment.
Key Features
• High-purity calcium supplement for reef aquariums• Supports coral skeletal formation and invertebrate health• Maintains stable calcium levels in reef systems• Suitable for SPS, LPS, soft corals, and coralline algae• Easy-to-dissolve powder for accurate dosing
Benefits
✔ Promotes strong coral skeletal growth✔ Supports healthy growth of invertebrates✔ Helps maintain stable calcium levels✔ Enhances coral coloration and vitality
Usage
Test calcium levels before dosing.
Determine the required amount based on aquarium volume and test results.
Dissolve the powder in freshwater or saltwater before adding to the aquarium, or dose directly into high-flow areas.
Monitor calcium levels regularly and adjust dosing as needed.
Seachem Reef Advantage Magnesium – 300 g - 4 kg
Description
A high-purity, advantage magnesium supplement for reef aquariums, designed to maintain optimal magnesium levels and support coral and invertebrate health. Magnesium helps stabilize calcium and alkalinity levels, promotes healthy skeletal growth in SPS and LPS corals, and supports coralline algae development. Regular supplementation ensures a balanced and thriving reef environment.
Key Features
• High-purity magnesium supplement for reef aquariums• Stabilizes calcium and alkalinity levels• Supports coral skeletal growth and invertebrate health• Promotes coralline algae development• Easy-to-dissolve powder for accurate dosing
Benefits
✔ Maintains stable magnesium levels in reef systems✔ Supports strong coral growth and skeletal development✔ Helps stabilize calcium and alkalinity✔ Enhances overall reef vitality and health
Usage
Test magnesium levels before dosing.
Determine the required amount based on aquarium volume and test results.
Dissolve the powder in freshwater or saltwater before adding to the aquarium, or dose directly into a high-flow area.
Monitor magnesium levels regularly and adjust dosing as needed.
Seachem Reef Advantage Strontium 300g-600g
Description
A high-purity, advanced strontium supplement for reef aquariums, formulated to support optimal strontium levels essential for coral skeletal growth and coralline algae development. Strontium works alongside calcium and magnesium to strengthen coral skeletons and maintain a balanced reef environment. Regular supplementation helps sustain vibrant and healthy reef systems.
Key Features
• High-purity strontium supplement for reef aquariums• Supports coral skeletal formation and growth• Promotes healthy coralline algae development• Complements calcium and magnesium supplementation• Easy-to-dissolve powder for precise dosing
Benefits
✔ Supports strong coral skeletons and growth✔ Enhances coralline algae health and coloration✔ Helps maintain balanced trace element levels✔ Promotes overall reef stability and vitality
Usage
Test strontium levels before dosing.
Determine the required amount based on aquarium volume and test results.
Dissolve the powder in freshwater or saltwater before adding to the aquarium, or dose directly into a high-flow area.
Monitor strontium levels regularly and adjust dosing as needed.
Seachem Reef Buffer 250 g-1 kg
Description
A high-purity, advanced alkalinity supplement for reef aquariums, designed to maintain stable carbonate hardness (KH) and support coral and invertebrate health. Alkalinity is essential for coral skeletal formation, biological processes, and overall reef stability. Regular use helps prevent pH swings and promotes a healthy, thriving reef environment.
Key Features
• High-purity alkalinity supplement for reef aquariums• Maintains stable carbonate hardness (KH)• Supports coral skeletal growth and invertebrate health• Helps prevent pH fluctuations• Easy-to-dissolve powder for accurate dosing
Benefits
✔ Maintains stable alkalinity levels in reef systems✔ Supports healthy coral and invertebrate growth✔ Prevents pH swings and promotes water stability✔ Enhances overall reef vitality and coloration
Usage
Test alkalinity levels before dosing.
Determine the required amount based on aquarium volume and test results.
Dissolve the powder in freshwater or saltwater before adding to the aquarium, or dose directly into a high-flow area.
Monitor alkalinity levels regularly and adjust dosing as needed.
Seachem Reef Builder 300 g- 4 kg
Description
A high-purity calcium and alkalinity supplement for reef aquariums, designed to support rapid and healthy coral skeletal growth. Seachem Reef Builder maintains optimal calcium and alkalinity levels while helping to stabilize magnesium, promoting vibrant corals, strong skeletal development, and a balanced reef environment. Ideal for SPS, LPS, and soft corals.
Key Features
• High-purity calcium and alkalinity supplement• Supports strong coral skeletal growth• Stabilizes magnesium levels in the aquarium• Promotes healthy SPS, LPS, and soft coral development• Easy-to-dissolve powder for accurate dosing
Benefits
✔ Supports rapid and healthy coral growth✔ Enhances coral coloration and vitality✔ Maintains stable calcium, alkalinity, and magnesium levels✔ Promotes overall reef stability and health
Usage
Test calcium and alkalinity levels before dosing.
Determine the required amount based on aquarium volume and test results.
Dissolve the powder in freshwater or saltwater before adding to the aquarium, or dose directly into a high-flow area.
Monitor calcium and alkalinity levels regularly and adjust dosing as needed.
Seachem Reef Calcium 250ml
Description
Seachem Reef Calcium is a concentrated liquid supplement formulated to replenish calcium levels in marine and reef aquariums. Calcium is essential for healthy coral growth, skeletal formation in invertebrates, and overall reef vitality. This easy‑to‑dose solution helps maintain stable calcium levels, supporting robust coral development and balanced water chemistry in reef systems.
Key Features
Concentrated liquid calcium supplement
Designed for marine and reef aquariums
Helps maintain optimal calcium levels
Easy to dose with clear instructions
Supports coral skeletal growth
Compatible with regular testing and dosing routines
Benefits
Promotes strong coral growth and skeletal health
Helps support invertebrate shell formation
Maintains balanced water chemistry in reefs
Easy to integrate into routine dosing schedules
Supports overall aquarium health and vitality
Usage
Test calcium levels before dosing
Add according to manufacturer dosing instructions (typically based on aquarium size and current levels)
Dose regularly to maintain recommended calcium range
Monitor calcium levels frequently with a reliable test kit
Adjust dosing based on water parameters and coral/invertebrate demand
Use in conjunction with other reef supplements for balanced trace element levels
Seachem Reef Carbonate 250–500g
Description
Seachem Reef Carbonate is a specially formulated buffering blend designed to raise and stabilize carbonate hardness (kH) and pH in marine and reef aquariums. By mimicking natural seawater carbonate composition, it helps maintain optimal water chemistry for stony corals, clams, and other reef‑building organisms. Reef Carbonate supports a stable alkaline environment, which is essential for healthy coral growth and overall reef system stability.
Key Features
Raises and stabilizes carbonate hardness (kH)
Helps maintain reef‑appropriate alkaline pH
Designed specifically for marine and reef aquariums
Easy to dose granular formula
Balances buffering ions to support long‑term stability
Suitable for regular use during water changes
Benefits
Promotes strong coral growth and skeletal development
Helps prevent pH swings common in reef systems
Supports overall reef aquarium stability
Aids in maintaining balanced water chemistry
Easy to use for routine maintenance and adjustments
Usage
Test kH and pH before dosing
Add gradually to raise carbonate hardness to desired range
Dissolve in replacement (new) water before adding to the aquarium when possible
Adjust dosage based on aquarium size and current carbonate levels
Once target levels are reached, dose regularly during water changes or as needed
Monitor water chemistry frequently to ensure stable reef conditions
Seachem Reef Complete
Seachem Reef Complete is a concentrated liquid calcium supplement specifically formulated to restore and maintain calcium levels in reef aquariums without affecting pH. Calcium is essential for the growth and structural development of corals, coralline algae, clams, and other reef invertebrates.
Reef Complete contains a bioavailable ionic calcium source along with magnesium and strontium to help support coral skeletal growth while maintaining proper ionic balance in marine systems. It is designed for regular use as part of a complete reef supplementation programme.
Key Features
Concentrated ionic calcium supplement
Does not alter aquarium pH
Contains magnesium and strontium
Supports coral skeletal growth and coralline algae development
Suitable for all reef and marine aquariums
Available Options
250ml
500ml
Directions for Use
Shake well before use. Add directly to a high-flow area of the aquarium. Test calcium levels regularly and adjust dosage as needed to maintain recommended reef parameters. Do not exceed recommended dosage without testing.
Suitable for use in reef aquariums containing SPS, LPS, soft corals, clams, and other marine invertebrates.
Seachem Reef Dip
Protect your coral and marine aquarium inhabitants with Seachem Reef Dip from Seachem. This easy-to-use treatment is designed to eliminate unwanted pests, parasites, and bacteria from corals and invertebrates before introducing them to your tank. Reef Dip helps ensure a healthy, stress-free transition while maintaining the balance of your reef ecosystem.
Key Features
Removes pests, parasites, and harmful bacteria from corals
Safe for most marine invertebrates
Simple dip treatment before aquarium introduction
Helps prevent disease spread in reef tanks
Fast-acting and easy to use
Benefits
✅ Protects corals and invertebrates from unwanted pests✅ Reduces risk of disease transmission in the aquarium✅ Simple and safe dipping process✅ Helps maintain a healthy, balanced reef environment✅ Supports a stress-free introduction for new specimens
Reasons to Consider Using Seachem Reef Dip
Ideal for new coral additions or quarantined specimens
Prevents outbreaks of parasites like flatworms or nudibranchs
Supports overall reef tank health and stability
Easy, quick, and effective preventive treatment
Instructions for Use
Prepare a separate container with clean saltwater and add the recommended amount of Reef Dip.
Submerge the coral or invertebrate for the specified time according to the instructions.
Gently rinse with clean saltwater before placing into the aquarium.
Do not exceed recommended exposure times to avoid stress.
Store product tightly closed in a cool, dry place.
Seachem Fusion 1 500 ml–4 L
Description
Seachem Fusion 1 is a complete reef supplement designed to maintain stable and balanced calcium, alkalinity, and magnesium levels simultaneously in marine and reef aquariums. Formulated for ease of use and precise dosing, Fusion 1 helps support healthy coral growth, skeletal development, and overall reef vitality. Its buffered formula reduces the risk of precipitation and pH swings, making it suitable for regular dosing as part of a reef aquarium maintenance routine.
Key Features
Comprehensive reef supplement for calcium, alkalinity, and magnesium
Buffered formula to minimize pH fluctuation and precipitation
Designed for marine and reef aquariums
Available in 500 ml to 4 L sizes
Easy to dose liquid formula
Supports balanced water chemistry
Benefits
Helps maintain consistent levels of essential reef elements
Supports robust coral growth and skeletal health
Reduces the risk of chemical imbalance and precipitation
Simplifies reef aquarium supplementation with a single product
Suitable for regular use in reef maintenance schedules
Usage
Test calcium, alkalinity, and magnesium levels before dosing
Dose according to aquarium volume and current parameters
Add Fusion 1 directly to the aquarium or dosing container
Dose regularly to maintain recommended reef water chemistry
Monitor parameters often to adjust dosing as needed
Use in conjunction with quality test kits for optimal reef balance
Seachem Reef Fusion 2 500 ml–4 L
Description
Seachem Fusion 2 is a complete reef aquarium supplement specifically formulated to support stable calcium, alkalinity, and magnesium levels while minimizing precipitation. Designed for use in marine and reef systems, Fusion 2 helps maintain balanced water chemistry that supports healthy coral growth and skeletal development. Its advanced buffered formula allows simultaneous replenishment of major reef elements with controlled dosing, making it ideal for regular use in reef aquarium maintenance.
Key Features
Comprehensive supplement for calcium, alkalinity, and magnesium
Buffered to reduce pH swings and minimize precipitation
Suitable for marine and reef aquariums
Available in sizes from 500 ml to 4 L
Easy to dose liquid formula
Supports consistent reef water chemistry
Benefits
Helps maintain stable major reef parameters
Encourages healthy coral growth and skeletal strength
Reduces the challenges of balancing reef chemistry
Simplifies supplementation with a single product
Promotes overall reef aquarium health
Usage
Test calcium, alkalinity, and magnesium levels before dosing
Dose according to tank volume and current water parameters
Add Fusion 2 directly to the aquarium or dosing container
Dose regularly to maintain recommended reef element levels
Monitor water chemistry frequently to adjust dosing as needed
Use alongside quality test kits for optimal reef balance