FLUVAL U Series Internal Filters


3 stage filtration.

Versatile positioning.

increase water movement & vital aeration.




Offering outstanding 3-stage filtration, increased water movement and vital aeration, U Series internal filters are the perfect solution where external filtration is not possible.

Adjustable 3-way flow control for customized water circulation and oxygenation. Convenient flip-top lid for ultra fast media changes. 

Available in the U2, U3 & U4.

Top Output

Maximizes circulation and oxygenation.

Middle Output

Spray bar for gentle flow in planted aquariums.

Bottom Output

Deep water agitation.


Versatile Positioning

U Series filters can be used as a primary filter in smaller aquariums or as a supplementary filter for larger aquariums.


To create currents or customize water flows.


For shallow tanks, larger tanks with low water, or to create a decorative waterfall feature.


Aquarium capacity 15 US Gal / 55l

Pump output 65 US GPH/250 LPH

Wattage 4.5W

Dimensions 4″L x 3″ W x 6″ H/ 10 x 8 x 15cm


Aquarium capacity 30 US Gal / 110l

Pump output 105 US GPH/400 LPH

Wattage 5W

Dimensions 8″L x 3.5″ W x 4″ H/ 20 x 9 x 10cm


Aquarium capacity 40 US Gal / 150l

Pump output 155 US GPH/600 LPH

Wattage 7.5W

Dimensions 10.5″L x 3.25″ W x 4″ H/ 27 x 8 x 10cm


Aquarium capacity 65 US Gal / 240l

Pump output 260 US GPH/1000 LPH

Wattage 10W

Dimensions 13″L x 4″ W x 4.5″ H/ 33 x 10 x 11cm


Additional information


U1, U2, U3, U4