Brightwell Calcion Concentrated Calcium Supplement 8.5oz

Highly-concentrated ionic calcium solution, Increases the concentration of calcium in marine aquarium water to provide coralsand other reef-building invertebrates with one of the most important elementsrequired for growth, Is ionic rather than chelated, and contains no unwanted organic material such asEDTA, gluconate, or polygluconate, Over 50% stronger than most competing products, Free of phosphate, silicate, and organic material, Formulated by a marine scientist