Sunsun HW-303B 4-stage External Canister Filter w/ 9w UV Sterilizer, 370gph Good for up to 100 gallon fish tanks Dimension: 10.5" L X 10.5" W X 16" H Flow rate: 370 GPH (1400L/hr) Pump Power: 35W Built in 9 Watt UV sterilizer for controlling algae spores/bacteria and promoting clear water