ECO-Zero Dosing Equipment, which is patent technology of cooling water filtration, applying in cooling systems and cooling tower water purification can effectively remove the water scale, alga and iron from the cooling system. The ECO filtration equipment has the water optimizer which has the effectiveness of magnetization to help the ECO filtration equipment to purify the water significantly. Also, the Iron removal is almost 100% that prevent the rust from the heat exchanger or other cooling systems.