Sunsun 9W UV Sterilizer Light Clarifier Pond Koi Aquarium Fish Tank Reef Pump Filter Get rid of green water by eliminating algae bloom permanently Control harmful parasites and bacteria instantly Reduce unpleasant orders fast Prevent waterborne pathogens for healthier aquatic environment High clarity quartz glass chamber Safety switch will turn off power when chamber is open Indicating light 2.5 " mounting brackets 360 degree free rotation water outlet