Dosing & Foundation

Calcium, alkalinity & magnesium

As corals grow they strip calcium, alkalinity, and magnesium from the water faster than water changes can replace them. Dosing supplements — two-part (A/B) and three-part (calcium, alkalinity, magnesium) systems, all-in-one blends like Tropic Marin All-For-Reef, kalkwasser, and balling salts — top these major elements back up to stable reef-tank levels.