Tropic Marine Bio-Calcium 1.8 kg / 4 lbs. Can

Corals and other invertebrates use calcium from the sea water in which they live. While there is an inexhaustible supply of calcium in the ocean, in the marine aquarium, calcium and alkalinity get depleted quickly. To support the healthy, natural growth of corals, a balanced calcium supplementation is essential.

​Natural seawater has a calcium content of approximately 410 mg/l, an alkalinity of 6.5 °dH and a pH of 8.2. All three parameters work together in the water to reach calcium saturation, which is essential for optimum growth of corals and coralline algae. Tropic Marin® Bio-Calcium is a simple and efficient way to raise calcium and alkalinity and to stabilize the pH for optimal growth of corals and coralline algae while creating the ideal conditions for successful reef aquariums.