Sunsun 2015 HW-404B 5-Stage External Canister Filter Up to 150 Gallon Free Media Replace Old Model HW304B Model :HW-404B, 9w UV bulb 4 Layer/5 Stage 150 gallon, 55W 8.2 ft max, 525gph, 20 lb Dimensions 11" x 11" x 18"