Jebao 36W UV Clarifier Sterilizer Koi Fish Pond Tank Aquarium 36 Watts UVC Light AC 110-120V / 60Hz 36 Watts Recommend flow rate 4400gph Suitable for ponds up to 8000 gallons or 400 gallons aquarium Inlet/outlet size: 3/4", 1", 1-1/4" & 1-1/2" 22 ft cord and sealed plug