Chemically balanced formula to support the most delicate Corals and other marine life Reaches a stable, natural pH shortly after mixing Free of Nitrates & Phosphates Produced by a small batch process to ensure homogeneity and consistency of the salt mixture Corals, calcareous algae and other invertebrates use large amounts of Calcium for the building of their skeletons or shells. The Calcium level in natural seawater at 35ppt is approximately 400 ppm. The Coral Pro formula provides elevated levels of calcium at the "lower than natural" salinities preferred in reef aquariums.
Table shows concentration at 33ppt -
Calcium - 450
Magnesium 1390
22 kg. (48.5 lb.) Bucket/ Water volume: 660 liters (175 gal.)