Two Little Fishies Kalkwasser

Calcium Supplement Mix. Our pure source of Calcium Hydroxide makes the ideal solution for replenishing calcium and maintaining alkalinity, for corals, clams, and calcareous algae that build skeletons of calcium carbonate. It also helps maintain pH, precipitates phosphates and enhances protein skimming.

Available in 500g (1.1 lb) bottle and 2kg (4.4 lb) bucket.