Offering outstanding 3-stage filtration, increased water movement and vital aeration, Fluval U-Series internal filters are the perfect solution where external filtration is not possible.
FLUVAL U4 Internal Filter - up to 240 L (65 US Gal)
Designed for use in both fresh and saltwater applications, U series underwater filters offer superior water purification, movement and aeration capabilities. Whether you’re looking for a submersible filter that offers multi-stage cleaning, quiet operation, versatile horizontal and vertical mounting options or ultra fast media changes, U series has something to offer everyone. U series filters are also great for terrariums and turtle tanks.
- Designed for aquarium up to 30 gallons
- Use as a primary filter for smaller aquariums, or supplementary filter for larger aquariums
- Position horizontally for shallow tanks, larger tanks with low water levels, or to create a decorative waterfall feature
- Position vertically against aquarium wall to create currents or customized flow patterns
- Convenient flip-top lid allows for quick and easy access to filter cartridge for maintenance or replacement
- 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
- BioMax biological media included
- Made in Italy
- Ideal for freshwater, saltwater and reptile environments