Maintaining balanced levels of the Foundation Elements (Ca KH & Mg) creates optimal water conditions for promoting strong and healthy coral growth. Reef Foundation C is a Magnesium complex for balanced formation of Coral Skeleton
 
A magnesium complex for balanced formation of coral skeletons
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 positive coral health and growth.

Red Sea’s Reef Foundation C contains blended salts of magnesium and is part of Red Sea’s complete Reef Care Program.