Calcium, magnesium, strontium and carbonate are the basic foundation elements of coral skeletons. All of these elements need to be available in balanced proportions for coral health and growth. Reef Foundation B is a complex of carbonate and other buffers present in seawater that maintain proper alkalinity and pH, and is part of Red Sea#@#s complete Reef Care program.

Concentration 
Liquid supplement: 1ml will raise the alkalinity of 100 liters (25gal) by 0.036 meq/l (0.1dKH)