Sunsun HW-704B 525 GPH 5-Stage External Canister Filter with 9W UV Sterilizer 5 Stages with 9W UV, 525GPH (2000LPH) Good for up to 150 gallon fish tanks Dimension: 12" L X 12" W X 18" H Built in 9 Watt UV sterilizer for controlling algae spores/bacteria and promoting clear water 4 Large Media Baskets for All Your Media Need