Red Sea Foundation A supplies calcium and strontium in the exact ratio your corals need for strong skeletal growth. This liquid concentrate is part of Red Sea's complete Reef Care Program—a balanced approach to maintaining the four foundation elements: calcium, magnesium, strontium, and carbonate.
Dosing is simple: 1 mL raises calcium by 2 ppm in 25 gallons. No mixing required. Just measure and dose directly into your tank for consistent, predictable results.
Healthy coral skeletons depend on balanced nutrition. Foundation A delivers precisely what your reef demands, working alongside Foundation B (alkalinity) and Foundation C (magnesium) to create the stable chemistry vibrant corals thrive in.
