Marine Mineralized Water Filter Marine Mineralized Water Filter also know as rehardening water filter, is not only to filter out the solid particles and other pollutants in water, but also to add calcium, magnesium, potassium and other trace elements and to adjust the PH of the water, make the water taste better for drinking. The fresh water generated by fresh-water evaporator is not good enough for heath to drink over a long period of time due to its lack of needed minerals,then a Rehardening Water Filter is required to enrich the water with calcium and alkalinity. The filter tank of our is Rehardening Water Filter, made of Stainless Steel. The filter tank contains filter media for the removing of solid particles,contaminants , add partial mineral elements and other microelement,ph adjustment. Marine Mineralized Water Filter Specification