FEATURES: 1、The uv clarifies the water by reducing the number of free swimming algae,bacteria,virus, fungiandprotozoans .Offer a healthy environment to fish. 2、When water under irradiation of wavelength in 253.7nm’s ultraviolet.radiation in a short period,the germ and pathogen in the water will be killed then. 3、This uv clarifying of 5 series can be used both for submersible or outside the water. 4、This uv clarifying fix to HQJ-500G/700G/900G/1500G and JP022-025 pump.