Seachem Reef Advantage Magnesium is a high-quality, concentrated magnesium supplement specifically formulated for reef aquariums. Magnesium plays a vital role in maintaining the correct balance of calcium and alkalinity, and supports coral growth, color, and overall health.
Unlike many magnesium supplements, Reef Advantage Magnesium contains a blend of magnesium salts to avoid unwanted chloride or sulfate build-up, ensuring long-term ionic balance in your system. It is completely reef-safe and will not affect pH when used as directed.
Ideal for:
SPS and LPS corals
Clams and coralline algae
Maintaining stable parameters in high-demand reef systems
Recommended Magnesium Range:
Maintain between 1,200 – 1,350 mg/L
Directions for Use:
Use 5g (1 teaspoon) per 80 litres of aquarium water every 2–3 days as needed.
Do not exceed 25g per 80 litres per day.
Product Weights & Coverage:
250g: Treats ±4,000 litres
500g: Treats ±8,000 litres
1kg: Treats ±16,000 litres
2kg: Treats ±32,000 litres
4kg: Treats ±64,000 litres
Keep your reef thriving with balanced magnesium – trust Seachem Reef Advantage Magnesium for safe, effective supplementation.