Concentrated calcium supplement for all marine and reef aquaria, 170,000ppm.

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