ReefPure Kalkwasser Plus is a superior product offering several distinct advantages over regular Calcium Hydroxide. These advantages include increased density, higher solubility in water and reduced dust and mess. It is produced entirely from ultra-pure Calcium Oxide, the highest quality raw material in the hobby. ReefPure Kalkwasser Plus is extremely popular worldwide with the "big tank" crowd and is especially effective in high biological demand mega-reefs. With continued use, water quality will be substantially improved by removing Phosphates and stabilizing pH and Alkalinity. In addition, Kalkwasser Plus will drastically improve the function of the protein skimmer and many hobbyists position their Kalkwasser drip line near their protein skimmers intake for maximum removal of organics.