High quality high performance acesthetically desinged for water treatment."Spagold" High Density Fiberglass Sand filters are constructed by the latest Engineering Technology.The improvement of flow ability provides and Ultra-Pure water filtration.The Fiberglass winding desing allows the filter to have extra strength and resistance to chemical and corrosives.High Density Fiberglass Sand Filters are the most recommendable equipment for the application of water and industrial water treatment.