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Fluval U Series Underwater Filter

Fluval U Series Underwater Filter
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* Fully submersible three-stage filter for superior filtration options
* Enhance filtration, water movement and aeration in turtle tanks
* Use horizontally for semi-aquatic reptile paludariums or viquariums

Create the ideal aquatic herptile habitat with superior filtration, water movement and aeration. The versatile Fluval U Series Underwater Filter offers creative new possibilities in aquatic and semi-aquatic herptile habitats. This fully submersible filter suction mounts virtually anywhere inside your setup. Place horizontally or vertically for filtration options not possible with conventional reptile filters.

The Fluval U Series Underwater Filter is loaded with outstanding features. Adjustable flow rate and directional output nozzle lets you direct water movement where you need it most. Venturi system introduces vital oxygen for a healthy aquatic environment. The top-loading Fluval U Series filter features flip-top media chamber access for fast, efficient maintenance. Quiet running units are easy to install and maintain as primary filtration. Use multiple units in larger systems for exceptional filtration. Perfect for paludariums, viquariums, terrariums and turtle tanks.

U2, U3 and U4 feature adjustable 3-way flow to give you custom water movement in your aquatic reptile habitat. Choose top output for maximum circulation and oxygenation, spray bar output for gentle flow, or bottom output for deepwater agitation.

U1 includes: 1 foam filter pad; U2 includes: 2 foam filter pads, 2 poly/carbon cartridges, and 40 g BioMAX; U3 includes: 2 foam filter pads, 2 poly carbon cartridges and 40 g BioMAX; and U4 includes: 2 foam filter pads, 2 poly carbon cartridges and 90 g BioMAX.

Model Stage 1 Filter Foam
Bio/Mechanical Filtration
Stage 2 Poly/Carbon Cartridge
Chemical Filtration
Stage 3 BioMax
Biological Filtration
U2 X X X
U3 X X X
U4 X X X


Model Aquarium Size Flow Rate Dimensions Wattage
U1 15 gal 65 gph 2-1/4" x 2-3/4" x 5-3/4" high 5W
U2 12-30 gal 105 gph 3" x 3-1/2" x 8" high 5W
U3 24-40 gal 155 gph 3" x 3-1/2" x 10-1/2" high 7.5W
U4 34-65 gal 260 gph 3" x 3-1/2" x 13" high 12W

Shop all Filtration & Pumps for Reptiles.

Downloadable User Manual PDF.
(Requires Adobe Acrobat Reader 4.0 or later - get it here for free.)

Please click on "More Information" for filter maintenance tips.

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Please note: Return of electrical equipment to Drs. Foster & Smith for exchange or refund is limited to 60 days from the date of purchase. Beyond 60 days, please contact the manufacturer for repair or replacement as covered by the manufacturer's warranty.

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