Open your eyes to a world of unsurpassed underwater aquarium filtration. The versatile Fluval U Series Underwater Filter offers creative new possibilities for aquarium filtration, water movement and crucial aeration in freshwater and saltwater aquariums. Fully submersible filter suction mounts virtually anywhere inside your aquarium, making it the perfect solution for setups where external filtration is not possible. Place horizontally or vertically in your aquarium or even in sump-style filters for added filtration. Adjustable flow rate and directional output nozzle lets you direct water movement where you need it most. Venturi system introduces vital oxygen for a healthy aquarium environment. The top-loading Fluval U Series filter features flip-top media chamber access for fast, efficient maintenance. Quiet running units are easy to install and maintain as primary aquarium filtration or as the ideal supplemental filtration in larger systems with heavy fish loads. Also great for terrariums and turtle tanks.
U2, U3 and U4 feature adjustable 3-way flow to give you custom water movement in your aquarium. Choose top output for maximum circulation and oxygenation, spray bar output for gentle flow in planted aquariums, or bottom output for deepwater agitation.
U1 includes: 1 foam filter pad; U2 includes: 2 foam filter pads, 2 poly/carbon cartridges, and 40 g BioMAX; U3 includes: 2 foam filter pads, 2 poly-carbon cartridges and 40 g BioMAX; and U4 includes: 2 foam filter pads, 2 poly-carbon cartridges and 90 g BioMAX.
Fluval U Series Underwater Filter Instruction Manual PDF
Please click on "More Information" for filter maintenance tips.