Keep the water in your tank clean and healthy with the help of this Top Fin Canister Filter. This filter offers a three-pronged filtration process for optimal water purification. Suitable for both fresh and marine water aquariums, it is easy to install and leak resistant, and features a removable inlet/outlet combo that makes cleaning a breeze. Only at PetSmart. Features: Mechanical, chemical and biological filtration process for maximizing water purification Compact, simple installation with leak resistant structure and quick-syart button Remove inlet/outlet combo makes cleaning convenient Includes: 1 Filter Intended For: Fresh and marine water aquariums Material(s): Color: Black Caution: This is not a toy. Contains small parts. Keep out of reach of children. To avoid injury, following the safety instructions in the enclosed instruction guide. Directions: To replace the Cartridge: 1. Release the buckles. 2. Pull the buckles outward. 3. Lift the buckles up, and un-tighten the motor head. 4. Pull the handle up, and remove the motor head from the canister. 5. Take out the baskets and their respective covers in order. To help maintain a healthy aquarium, change foam and media according to the instructions. Remove the carbon when medicating the water as carbon will absorb the medications. Change out 10% of the water weekly or 25% monthly. Use a water conditioner (sold separately) every time you add fresh tap water to your aquarium. Never use soap, detergents, or cleaning agents while cleaning the aquarium or equipment as they can harm your fish. Available Sizes Medium: 9 in L x 9 in W x 18.1 in H (22.8 x 22.8 x 45.9cm). For aquariums 40-60 gallons. Large: 9.4 in L x 9.4 in W x 17.7 in H (23.8 x 23.8 x 44.9cm). For aquariums 60-80 gallons. Size: Small.