Authorized Retailer
Canada | EN U Series Underwater Filter
U Series Underwater Filter
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.
U Series
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
Versatile horizontal and vertical mounting options
Adjustable 3-way flow control for customized water circulation and oxygenation
Convenient flip-top lid for ultra fast media changes
Versatile horizontal and vertical mounting flexibility
Available Models
Unique 3-Stage Filtration
For crystal clear water conditions.
Free Media Included
Foam Filter Pad
U1 (1) U2/U3/U4 (2)
Poly/Carbon Pads
U2/U3/U4 (2)
BioMax
U2,U3 (40 g) U4 (80 g)
Quick Flip Top Maintenance
Easy to remove for fast filter access.
Tilt
To remove from bracket
Flip
To access inside filter
Replace
Or clean filter media
Adjustable 3-Way Flow
For customized water circulation and oxygenation.
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.
Vertically
To create currents or customize water flows.
Horizontally
For shallow tanks, larger tanks with low water, or to create a decorative waterfall feature.
Compare Models & Specs
Looking for Parts?
Browse our extensive parts catalog to find what you’re looking for.
New to the Hobby?
Learn more about how to get started with aquariums.
