Seachem Reef Glue – 20g
Seachem reef glue is a strong, fast-setting adhesive designed for use in marine aquariums. It bonds corals, frags, and rockwork securely, even underwater, making it ideal for reef keepers who need a reliable and clean glue for aquascaping.
What it does
Creates a strong bond in seconds
Works underwater without losing strength
Perfect for attaching coral frags, live rock, and aquascaping pieces
Thick gel formula for easy, precise application
Long-lasting hold that stays stable in marine conditions
Why it’s useful
Makes coral placement quick and simple
Reduces stress during fragging and mounting
Helps secure structures so they don’t shift or fall
Cleaner and easier to use than thin glues
Suitable for both beginners and advanced reef keepers
How to use
Dry the surface if possible (can also be used underwater)
Apply a small amount of glue to the frag or rock
Press and hold in place for a few seconds
Allow to cure fully before moving the coral again
Ideal for
Coral fragging
SPS, LPS, and soft coral mounting
Reef aquascaping
Securing loose rock pieces
Marine tanks of any size
Strong, easy coral mounting for every reef tank
Seachem reef glue 20g gives you a dependable way to secure corals and rockwork with minimal mess and maximum control.
Seachem Reef Iodide 250 ml–500 ml
Description
Seachem Reef Iodide is a concentrated liquid supplement formulated to replenish iodine and other essential trace elements that are naturally consumed by corals and invertebrates in marine and reef aquariums. Iodine plays a key role in coral pigmentation, polyp extension, and overall health. Reef Iodide helps maintain balanced trace element levels to support vibrant coral growth and long‑term reef vitality.
Key Features
Replenishes iodine and essential trace elements
Specifically designed for marine and reef aquariums
Liquid formula for easy dosing
Supports coral pigmentation and polyp extension
Compatible with regular reef maintenance routines
Available in 250 ml to 500 ml sizes
Benefits
Helps maintain optimal trace element balance in reef systems
Supports enhanced coral coloration and vitality
Encourages healthy polyp extension and reef activity
Easy to dose as part of ongoing aquarium care
Works with other reef supplements for balanced chemistry
Usage
Test iodine or trace element levels routinely if possible
Dose according to aquarium volume and current trace element levels
Add Reef Iodide directly to the aquarium or dosing container
Dose regularly as part of routine reef maintenance
Monitor coral response and adjust dosing as needed
Use alongside comprehensive reef supplement programs for balanced water
Seachem Reef Iron 100–500 ml
Description
Seachem Reef Iron is a liquid trace element supplement formulated to replenish iron and essential trace metals that are consumed by corals and other invertebrates in marine and reef aquariums. Iron is important for healthy coral pigmentation, metabolic processes, and overall vitality. Reef Iron helps maintain stable trace element levels, supporting vibrant coral growth and balanced reef water chemistry.
Key Features
Provides essential iron and trace elements for reef aquariums
Liquid formula for easy dosing
Designed specifically for marine and reef systems
Supports coral pigmentation and metabolic health
Available in sizes from 100 ml to 500 ml
Can be used as part of a regular supplement program
Benefits
Helps maintain balanced trace element levels
Supports vibrant coral coloration and growth
Encourages overall coral and invertebrate health
Easy to dose and integrate into maintenance routines
Works alongside other reef supplements for complete water chemistry support
Usage
Test iron and trace element levels if possible before dosing
Dose according to aquarium volume and current water parameters
Add Reef Iron directly to the aquarium or dosing container
Dose regularly to maintain balanced trace element levels
Monitor coral response and adjust dosing as needed
Use with other reef supplements for a complete nutrient regimen
Seachem Reef Kalkwasser 250 g- 500 g
Description
A high-purity calcium hydroxide supplement for reef aquariums, designed to maintain optimal calcium and alkalinity levels while raising pH naturally. Seachem Reef Kalkwasser supports strong coral skeletal growth, stabilizes water chemistry, and enhances overall reef health. Ideal for SPS, LPS, and soft corals.
Key Features
• High-purity calcium hydroxide for reef aquariums• Maintains calcium and alkalinity levels• Naturally raises and stabilizes pH• Supports coral skeletal growth and development• Easy-to-use powder for precise dosing
Benefits
✔ Promotes strong coral skeletal growth✔ Stabilizes calcium, alkalinity, and pH✔ Enhances overall reef vitality and health✔ Supports healthy SPS, LPS, and soft corals
Usage
Test calcium and alkalinity levels before dosing.
Mix the powder with freshwater to create a saturated solution.
Add the solution slowly to the aquarium or sump, preferably via a drip system.
Monitor calcium, alkalinity, and pH levels regularly and adjust dosing as needed.
Seachem Reef Nitrogen 100 ml–500 ml
Description
Seachem Reef Nitrogen is a precision liquid supplement designed to provide a stable source of nitrogen for marine and reef aquariums. Nitrogen is an essential element used by corals and other reef organisms for growth and metabolic functions. Reef Nitrogen helps maintain balanced nutrient levels without causing harmful spikes in ammonia or nitrate, supporting healthy biological processes and overall reef vitality.
Key Features
Provides a controlled source of nitrogen for reef systems
Liquid formula for accurate and easy dosing
Designed specifically for marine and reef aquariums
Helps support biological processes in corals and invertebrates
Available in sizes from 100 ml to 500 ml
Compatible with regular reef supplement routines
Benefits
Supports nutrient balance critical to coral and invertebrate health
Helps maintain stable nitrogen levels without harmful fluctuations
Encourages healthy growth and metabolic activity
Easy to dose as part of ongoing reef maintenance
Works well with other reef supplements for complete water chemistry support
Usage
Test water parameters before dosing when possible
Dose according to aquarium volume and current nutrient levels
Add Reef Nitrogen directly to the aquarium or dosing container
Dose regularly as part of routine reef maintenance
Monitor coral and invertebrate response and adjust dosing as needed
Use in conjunction with other reef supplements for balanced nutrient support
Seachem Reef Phosphorus 100 ml–500 ml
Description
Seachem Reef Phosphorus is a liquid supplement formulated to provide a controlled source of phosphorus for marine and reef aquariums. Phosphorus is an essential nutrient used by corals and other reef organisms for metabolic functions and skeletal growth. Reef Phosphorus helps maintain balanced nutrient availability without causing harmful spikes, supporting overall reef health and vitality when used as part of a balanced dosing program.
Key Features
Provides phosphorus in a controlled liquid form
Designed specifically for marine and reef aquariums
Easy to dose with precise liquid measurement
Supports metabolic processes in corals and invertebrates
Available in sizes from 100 ml to 500 ml
Compatible with regular reef dosing routines
Benefits
Helps maintain balanced phosphorus levels essential for reef health
Supports coral and invertebrate metabolic activity
Encourages stable nutrient availability without harmful spikes
Easy to integrate into routine reef maintenance
Works in combination with other reef supplements for complete support
Usage
Test water parameters before dosing when possible
Dose according to aquarium volume and current phosphorus levels
Add Reef Phosphorus directly to the aquarium or dosing container
Dose regularly as part of a balanced supplement program
Monitor coral/invertebrate response and adjust dosing as needed
Use alongside other reef supplements for balanced water chemistry
Seachem Reef Phytoplankton – 250 ml 500 ml
Description
A concentrated phytoplankton blend designed to provide essential nutrition for reef aquariums. Phytoplankton is a natural food source for many marine organisms including corals, feather dusters, clams, sponges, and other filter feeders. Regular feeding helps support coral growth, coloration, and overall reef ecosystem health.
Key Features
• Concentrated phytoplankton food for reef aquariums• Provides essential nutrients for filter-feeding organisms• Supports corals, clams, sponges, and other invertebrates• Helps maintain a balanced reef feeding routine• Easy liquid dosing
Benefits
✔ Provides natural nutrition for filter feeders✔ Supports coral health and growth✔ Helps improve reef biodiversity✔ Promotes a healthy and active reef ecosystem
Usage
Shake well before use.
Turn off protein skimmers or mechanical filtration temporarily if desired.
Add the recommended dose directly to a high-flow area of the aquarium.
Feed regularly as part of your reef feeding routine.
Seachem Reef Plus 250 ml–500 ml
Description
Seachem Reef Plus is a comprehensive liquid supplement designed to support balanced growth and vitality in marine and reef aquariums. It delivers a blend of essential nutrients, trace elements, and minor elements that corals and invertebrates naturally consume but are often depleted in captive systems. Reef Plus helps maintain optimal nutrient levels to promote healthy coral development, vibrant coloration, and overall aquarium stability.
Key Features
Broad‑spectrum reef supplement for marine aquariums
Contains essential nutrients and trace elements
Liquid formula for easy, precise dosing
Designed for reef systems with demanding coral life
Available in 250 ml to 500 ml sizes
Complements other Seachem reef products
Benefits
Supports healthy coral growth and development
Helps maintain balanced nutrient levels
Enhances coral coloration and vitality
Easy integration into regular reef maintenance
Works well with test kits and dosing routines
Usage
Test water parameters before dosing when possible
Dose according to aquarium volume and current nutrient levels
Add Reef Plus directly to the aquarium or dosing container
Dose regularly as part of routine reef care
Monitor coral and invertebrate response and adjust as needed
Use along with other reef supplements for balanced chemistry
Seachem Reef Potassium – 100 ml-500ml
DESCRIPTION
A concentrated potassium supplement formulated for reef aquariums to help maintain potassium levels similar to those found in natural seawater. Potassium is an essential element used by corals for metabolic processes, coloration, and healthy growth. Regular supplementation helps prevent depletion caused by coral uptake, filtration, and protein skimming, while supporting vibrant colors and overall coral vitality in SPS, LPS, and soft corals.
KEY FEATURES
• Highly concentrated potassium supplement for reef aquariums• Helps restore and maintain natural seawater potassium levels• Supports coral metabolic and biological processes• Ideal for SPS, LPS, and soft coral reef systems• Easy-to-dose liquid formula for accurate supplementation
BENEFITS
✔ Enhances coral coloration, especially reds, pinks, and purples✔ Supports healthy coral growth and skeletal development✔ Helps prevent potassium depletion in reef systems✔ Promotes a stable and balanced reef environment
USAGE
Test the potassium level in your aquarium using a reliable test kit.
Determine the required dose based on your aquarium volume and test results.
Add the supplement to a high-flow area of the aquarium or sump.
Monitor potassium levels regularly and adjust dosing as needed.
Seachem Reef Reactor Lg 2 L- 4 L
Description
A coarse, high‑purity aragonite calcium reactor media designed for reef aquariums. This large‑grain media supplies essential elements including calcium, magnesium, strontium, potassium, and carbonates as it slowly dissolves in a calcium reactor with CO₂, helping maintain balanced water chemistry and support robust coral growth and coloration.
Key Features
• Coarse, high‑purity aragonite calcium reactor media (1–3 cm grain size) • Supplies calcium, magnesium, strontium, potassium, and carbonates • Supports balanced reef water chemistry • Excellent for use in calcium reactors with CO₂ dissolution • Available in larger media size for slower dissolution
Benefits
✔ Promotes stable alkalinity and pH balance ✔ Supplies a broad range of essential reef elements ✔ Supports strong coral skeletal formation and coloration ✔ Offers balanced supplementation with high soluble potassium and low impurities
Usage
Rinse media before first use.
Fill your calcium reactor with the Reef Reactor media.
Adjust CO₂ injection and water flow to control dissolution rate.
Regularly test calcium, alkalinity, and magnesium levels and adjust reactor settings
Seachem Reef Reactor Md 2 L -4 L
Description
Coarse, high‑purity aragonite media designed for calcium reactors in reef aquariums. Seachem Reef Reactor Md dissolves gradually to supply essential elements such as calcium, magnesium, strontium, potassium, and carbonates, helping maintain balanced water chemistry and support healthy coral growth. Ideal for reef systems that need stable alkalinity and trace element supplementation.
Key Features
• Coarse aragonite reactor media for calcium reactors• Supplies calcium, magnesium, strontium, potassium, and carbonates• Designed for stable, controlled dissolution• Supports balanced reef water chemistry• Available in 2 L and 4 L sizes
Benefits
✔ Helps maintain stable alkalinity and pH✔ Supplies essential reef elements for coral growth✔ Supports strong coral skeletal development✔ Promotes balanced and healthy reef conditions
Usage
Rinse media thoroughly before first use.
Fill your calcium reactor with the Reef Reactor Md media.
Adjust CO₂ injection and water flow to achieve desired dissolution rate.
Test calcium, alkalinity, and magnesium levels regularly and adjust reactor settings as needed.
Seachem Reef Status Magnesium
Seachem Reef Status Magnesium is a concentrated magnesium supplement formulated to maintain proper magnesium levels in marine and reef aquariums. Magnesium plays a vital role in maintaining calcium and alkalinity balance, supporting coral growth, skeletal development, and overall reef health.
Reef Status Magnesium helps prevent magnesium depletion, which can lead to unstable water chemistry and poor coral performance. It is suitable for regular supplementation as part of a complete reef maintenance program.
Features & Benefits:
Supplies essential magnesium for reef aquariums
Supports calcium and alkalinity balance
Promotes healthy coral skeletal growth
Helps maintain stable reef water chemistry
Safe for fish, corals, and invertebrates
Easy-to-use liquid formula
Trusted quality by Seachem
Ideal For:
Marine and reef aquariums
SPS, LPS, and soft coral systems
Aquarists maintaining balanced trace element supplementation
For marine aquariums only. Use as directed. Regular testing of magnesium levels is recommended to maintain optimal reef conditions.