Reef Code A by Brightwell Aquatics will simplify calcium and alkalinity in your marine aquarium with this unique additive. Part A's advanced solution is the calcium component of a two-part method for dosing calcium and carbonates in the same ratios that are present in natural seawater. Part A is ionically balanced in respect to natural seawater carbonate and calcium concentrations when used as directed with Reef Code B. Contains no silicate, phosphate or unwanted organic materials.
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