Fluval U1 Underwater Filter

Fluval's Underwater Filter is an underwater filtration system for aquariums. Equipped with foam filter media, it helps to provide effective and thorough mechanical and biological filtration. A fine foam pad traps small debris while a bio-foam captures debris and nitrifying bacteria. The nano filter has adjustable output with an attachable spray bar that distributes a gentle, even flow of water, making it safe for delicate fish or shrimp. Fine foam pad traps small debris while bio-foam captures larger debris and nitrifying bacteria. Adjustable 3-way flow control—top output for circulation and oxygenation, integrated spray bar for a gentle even flow, and bottom output for deep water agitation. Convenient flip-top lid allows for quick and easy access to filter cartridge for maintenance or replacement. Ideal for freshwater, saltwater and reptile environments. U1: Filter unit , (1) foam pad. Ideal for up to 20gL tank  Effective for cleaning water turtle tanks!