Aqua Ultraviolet® Classic Series UV Clarifier/Sterilizer in White - 25 Watt with 2" Inlet/Outlet in White, 220V

Used as a clarifier, the Classic 25 Watt will control green water in a freshwater environment of up to 4000 gallons that has 50% to 75% plant coverage and partial shade.; A sterilizer will eliminate green water and control bacteria.; Will sterilize up to 1200 gallons of fresh water or 150 gallons of salt water.