Enables the addition of biologically ideal calcium to the reef aquarium. The formula for healthy coral growth, BIO-CALCIUM re-creates conditions in the aquarium equivalent to a natural reef: only carbon dioxide and calcium in the biologically ideal form are added to the water. In contrast to other calcium additives, the ion equilibrium is maintained with BIO-CALCIUM. The pH-value remains stable. 3 mixtures for 3 x 5 l liquid A, B and C.
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