Seachem Reef Advantage Magnesium

Reef Advantage Magnesium is a concentrated (80,000ppm) optimized blend of magnesium chloride and sulfate salts, designed to restore depleted levels of magnesium with minimal impact to the ionic ratios found in natural seawater. Reef Advantage Magnesium contains no ammonia! Ammonia is a common contaminant found in every liquid magnesium supplement of the market. Severely depleted levels of magnesium (below 80 mg/L) can cause depressed pH levels and an inability to maintain proper calcium levels. Magnesium depletion is commonly associated with the use of kalkwasser.