A concentrated blend of calcium (140,000 mg / L) in ionic and gluconate forms. Prevents calcium precipitation and alkalinity depletion. Maintains coral growth. Calcification is a concentrated blend of ionic and gluconate calcium (140,000 mg/L) designed to restore and maintain calcium at levels found naturally in seawater, without affecting pH. These two forms of calcium are combined in Calcification to provide the aquarist with a convenient way to ensure optimal coral growth and health. Calcification can be dosed daily and every few minutes (especially with eight.four ).