FEATURES: 1、It integrates UV-C light and water pump as a whole, compact-sized and easy installation; 2、It uses energy saving and silence super super low noise water pump and submersible UV light; 3、This product is mainly suitable for water circulation of bottom filtration arowana tanks; 4、In order to not impact the output of the pump, the UV light will be put at intlet; 5、Special designed adjuster, which can adjust the output by UV light easily, then to assure the good result of UV clarifying.