Water is softened or conditioned by replacing hard ions like magnesium and calcium with softer sodium or potassium ions. All water softeners use the same operating principle: They trade the minerals for something else, in most cases sodium. Consist of corrosion resistant fiberglass lined polyethylene tank, durable control valve and resin tank. To save you money, enhances the effectiveness of soaps and detergents to keep skin soft, hair shiny, laundry bright and protect fixtures. Hard water is water that has high mineral content like magnesium and calcium. Staining on sinks, tubs, showers and clothing are major indicators for water hardness. Hard water causes a higher risk of lime scale deposits in household water systems and due to this lime scale build-up, pipes are blocked and the efficiency of hot boilers and tanks is reduced.