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Description
Brightwell Reef Code A is the calcium half of the Reef Code two-part system. Used together with Reef Code B (alkalinity), it replaces what corals, clams and coralline algae use to build their skeletons.
How to use: Dose in equal amounts with Reef Code B, following the directions on the label. Add each part to a different high-flow area of the tank or sump, and test calcium regularly to dial in your dose.
