Fluval U Series (internal)

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.

U1:
- for aquariums up to 15 gallons

U2:
- for aquariums up to 30 gallons

U3:
- for aquariums up to 40 gallons

U4:
- for aquariums up to 65 gallons

Features:
- 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