REEF SUPPLEMENTS CORE7 is a newly formulated easy-to-use super-concentrate (7X) of ionically balanced supplements suitable for any form of reefkeeping system and replaces 2-Part, 3-Part, Balling or other D.I.Y. supplement methods. It replenishes a range of essential elements consumed in the daily function of your reef system. (NOT TO BE USED WITH THE TRITON METHOD)