The Fluval Nano Aquarium Filter is an optimal water filtration system for small aquariums up to 15 gallons, including Fluval's EBI Nano Shrimp Habitat and Fluval's Flora Aquatic Plant Kit. Equipped with foam filter media, it provides effective and thorough mechanical and biological filtration. A fine foam pad traps small debris and a Bio-Foam captures debris and houses nitrifying bacteria. The filter also provides the option of adding a carbon cartridge for additional chemical filtering. The Nano Filter has an adjustable flow output with an attachable spray bar that distributes a gentle, even flow of water, making it safe for delicate fish or shrimp. The completely modular filter can quickly be assembled and disassembled for easy installation and maintenance. It comes complete with 3 suction cups for secure in-tank installation.