120 Watt Aquarium SMART High-Output UV Sterilizer with 2" union inlet/outlets, a 5" diameter body, and a single 120 watt HO uv lamp and quartz sleeve. The 120 watt SMART HO UV offers a suggested flow rate of 3,840 GPH and a maximum flow rate of 4,600 GPH for aquariums of up to 770 US Gallons, and for targeting waterborne Algae and harmful Bacteria. Great for Fresh and Salt Water Aquariums.

NOTE: All UV Sterilizer gaskets and o-rings must be replaced annually to ensure a watertight seal.