The FritzPro Mag Flake Magnesium Chloride is a high-quality concentrated magnesium salt that is designed to replenish magnesium in captive reef systems for better coral, coralline algae, and invertebrate growth and health.
Magnesium helps to stabilize the correct combination of calcium, alkalinity and pH values. Severely low magnesium levels can cause low pH values and the inability to maintain proper alkalinity and calcium values.
Magnesium also serves to prevent the excessive precipitation of calcium carbonate from aquarium water.
In full strength seawater (salinity = 35 ppt), magnesium is present between 1250 and 1350 ppm.