Brightwell Calcion 250 ml

Brightwell Calcion 250ml is a concentrated ionic calcium solution made with calcium chloride and purified water. It replenishes calcium used by stony corals, clams, calcareous algae and other reef-building organisms.

Measure calcium before supplementing and use repeated readings to estimate daily consumption. Smaller regular additions can help keep calcium more stable than occasional large corrections. Track alkalinity and magnesium alongside it: Calcion targets calcium, so increasing its dose does not by itself establish a balanced calcium-and-alkalinity routine.