Increases the MAGNESIUM level in all marine systems, without disturbing the ionic balance of the marine aquarium. It creates good environment for corals, tridacna, calcareous algae and other organisms. Optimum values of MAGNESIUM are approx. 1300-1400 mg/liter with a calcium value of 400-450 mg/liter. We recommend using MAGNESIUM in combination with CALCIUM and STRONTIUM from AQUATIC NATURE.