This highly pure Calcium Chloride Dihydrate (CaCl2.2H2O) is designed to increase calcium levels in saltwater reef aquariums, providing a reliable and effective solution for maintaining the health of corals and other marine life that require high calcium concentrations. Packed in-house by Triton using only the purest ingredients, this product undergoes rigorous testing and quality control within their lab to ensure maximum purity and efficacy. Suitable for use with 2-Part, 3-Part, or any DIY supplement methods preferred by reefkeepers and professional aquarists, it is a versatile tool in maintaining optimal water chemistry.