Fluval's Underwater Filter is an optimal water 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.
- Optimal water filtration system for aquariums that ensures proper oxygenation for clear water and a healthy environment.
- 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 deepwater 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.
**U2, U3, U4**: Filter unit, (2) foam pads, (2) poly/carbon cartridges , BioMax biological rings.
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