ZEOmag Magnesium Granulate is a highly pure source of magnesium specifically engineered for use in saltwater aquarium calcium reactors. It effectively addresses the common challenge of maintaining stable magnesium levels in reef tanks, especially when utilizing a calcium reactor, by providing a steady supply without introducing additional chloride or sulfate into the system. This magnesium granulate features a coarse grain size of 6-12 mm, making it an ideal addition to any calcium reactor. It is most commonly mixed with standard calcium carbonate media, comprising 10-30% of the total media blend, to ensure consistent and controlled magnesium supplementation. ZEOmag is best suited for reef aquarists who employ a calcium reactor and seek a reliable and pure method to stabilize their aquarium's magnesium levels. It is an essential component for those dedicated to precise water chemistry management and the long-term health and vibrant growth of their corals.