U Series

3-stage underwater filtration
for superior water quality

Ideal for freshwater, marine and reptile environments

UNDERWATER Filters

U1
55 L (14.5 US Gal.)

U2
110 L (30 US Gal.)

U3
150 L (40 US Gal.)

U4
240 L (65 US Gal.)

Adjustable 3-WAY FLOW

(U2, U3, U4)

Top output

For maximum circulation and oxygenation.

Integrated spray bar

Provides even, gentle flow for planted aquariums.

Bottom output

For deepwater agitation.

QUICK & EASY MAINTENANCE • Flip Top

(U2, U3, U4)

Flip

to access filter media.

Pull

to remove and replace filter media.

3-STAGE Filtration Filtration

Removes large particles.

Traps fine debris, improves water clarity, removes odors.

Provides optimum biological balance.

Filter Media

* U1 includes stage 1 only

VERSATILE Positioning

Thanks to the flexibility in the positioning of the filter, it can be used as a primary filter in smaller aquariums or as a supplementary filter for larger aquariums. Their unique ability to be placed at the bottom of your aquarium makes it ideal for low water levels.

COMPARE the Models

 
U1
U2
U3
U4
Aquarium Capacity
55 L
(14.5 US Gal)
45-110 L
(12-30 US Gal)
90-150 L
(24-40 US Gal)
130-240 L
(34-65 US Gal)
Dimensions
(H x W x L)
15 x 8 x 10 cm
(6 x 3 x 4 in)
20 x 9 x 10 cm
(8 x 3.5 x 4 in)
26.7 x 8.3 x 10 cm
(10.5 x 3.25 x 4 in)
33 x 10 x 11 cm
(13 x 4 x 4.5 in)
Filter Circulation*
250 L/h
(65 US Gal/h)
400 L/h
(105 US Gal/h)
600 L/h
(155 US Gal/h)
1,000 L/h
(260 US Gal/h)
Wattage
120V/60Hz – 5 W
230-240V/50Hz – 4.5 W
120V/60Hz – 5 W
230-240V/50Hz – 5 W
120V/60Hz – 7.5 W
230-240V/50Hz – 6 W
120V/60Hz – 12 W
230-240V/50Hz – 10 W

DISCOVER our U Series Products

Build your
UNDERWATER WORLD
with Fluval

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