Provide your turtle tank with mechanical biological and chemical filtration with the Whisper 20 or 30 Power Filter. Designed for any size aquarium, each filter promotes better feeding and extends cartridge life with the convenient flow control. Easy to use, the Power Filter utilizes Bio-Bag filter cartridges and comes with a Whisper Bio-Bag Cartridge and Bio-Foam, which helps cultivate aerobic bacteria. Pumps 210 gph, this filter is designed for aquariums up to 20 to 30 gallons. Product Dimensions: 5.4 x 8 x 7.9 inches.