Seachem Reef Advantage Magnesium 1.2kg – Concentrated Reef Supplement

Seachem Reef Advantage Magnesium 1.2kg is a highly concentrated dry magnesium supplement (80,000 ppm) designed to restore and maintain correct magnesium levels in reef aquariums while preserving natural seawater ionic balance. Its optimised blend of magnesium, chloride, and sulfate salts corrects magnesium depletion without introducing unwanted contaminants.

Unlike liquid magnesium products, Reef Advantage Magnesium contains no ammonia, ensuring safer long-term dosing. Proper magnesium levels are essential for stable pH, effective calcium utilisation, and overall reef system health—especially in aquariums using kalkwasser or frequent carbonate supplementation.

The 1.2kg pack is ideal for large reef systems, heavy coral loads, or long-term maintenance dosing.

Key Features:

• Highly concentrated magnesium supplement (80,000 ppm)
• Restores depleted magnesium efficiently
• Maintains natural seawater ionic ratios
• Ammonia-free formula for safer reef dosing
• Helps stabilise pH and carbonate alkalinity
• Supports calcium balance and coral growth
• Ideal for systems using kalkwasser
• Dry powder for precise, flexible dosing
• Suitable for beginner, advanced, and expert reef keepers
• Large 1.2kg pack for long-term reef maintenance

Seachem Reef Advantage Magnesium 1.2kg delivers a powerful, ammonia-free solution for maintaining optimal magnesium levels in reef aquariums. Its high concentration, balanced formulation, and large pack size make it ideal for serious reef keepers managing large or demanding coral systems. Available now at Reef Freaks.