Ionic calcium solution contains no unwanted organic material such as EDTA or gluconate. Highly concentrated Calcion increases calcium concentration in marine aquarium water to provide corals and other reef-building invertebrates with one of the most important elements required for growth. Formulated by a marine scientist, Calcion is over 50% stronger than most competing calcium supplements and is free of phosphate, silicate, and organic material. 17 oz treats up to 5,000 gallons
Please click on "More Information" for instructions and guideline.