Aquatop PF25-UV Hang-On Filter with UV Sterilization 90 gallons per hour flow rate Suitable for aquariums up to 25 gallons 5 watt pumping power 7 Watt UV Bulb 90-Gallons per hour flow rate Suitable for aquariums up to 25-gallons 5-Watt pumping power 7-Watt UV bulb Dimensions: 6-1/2-Inch by 6-Inch by 11-Inch