Brightwell Reef Code A Calcium Part 17 oz. 500 ml.

High-purity powdered calcium. Increases the concentration of calcium in marine aquarium water to provide corals and other reef-building invertebrates with one of the most important elements required for growth. Stronger and more economical than liquid calcium solutions; created for hobbyists maintaining multiple reef aquaria. Formulated by a marine scientist. Powder Royal Item Number: ABARCA500