support screen 6 inlet from pretreatment system 7 reactor drain 8 tank material 316 stainless steel 9 reactor sight glass 10 outlet to bulk storage the subject of the invention is an organic commercial industrial remineralizer designed to remineralize reverse osmosis distilled or ultra filtered drinking water after it has been purified by the methods aforementioned the remineralizer can be designed with output capacities from 5 gpm to 200 gpm and above the tank 8 design is based on a 4 to 1 ratio height to width is constructed of 316 stainless steel and can only function as a final step in a purification process as shown in fig2 in operation pretreated water flows in to the inlet 6 through a valve at the bottom of the cylindrical tank 8 and at the speed of gravity flows through the coral media 4 resting on a support screen 5 which has a critical crystal size purchased direct from okinawa japan based on the crystal sizing of 1 56 to 1 16 th of an inch the remineralized water then flows out through an outlet 10 at the top of the tank 8 to a storage tank shown in fig2 properly equipped to maintain sterility and temperature during the storage period the pretreatment process shown in fig2 must remove all the heavy metals and toxic or poison chemicals to prevent contamination of the coral media 4 once the coral media 4 is contaminated it cannot be reconstituted as the pretreated water flows from the bottom to the top of the remineralizer tank 8 it absorbs the natural minerals from the coral media 4 along with unidentified electrolytes the velocity of the water flowing over the crystal coral media 4 determines the amount of minerals absorbed as well as.