Fluval U3 Underwater Filter for Freshwater, Saltwater, Terrariums, Turtle Tanks

What Sets It Apart

Primary Filter for Smaller Aquariums; Supplementary Filter for Larger Aquariums

Ideal for aquarium sizes up to 40 gallons, this filter excels as a primary solution for smaller tanks, and adds excellent filtration for larger tanks. Whether you are setting up a small tank or scaling up, this filter meets your needs seamlessly.

Sleek Design with Easy Grip Water Control Panel Explore a modern, minimalist design that blends seamlessly with any aquarium setup. The easy grip water control panel ensures smooth operation, making water adjustments a breeze.

Redesigned Media Cartridge Equipped with an enhanced media cartridge, this filter traps more debris than ever before. Say goodbye to frequent cleaning and hello to clearer water and a healthier aquatic environment.

Convenient Flip-Top Lid for Quick Maintenance Enjoy the convenience of a flip-top lid that allows for effortless access to the filter cartridge. Whether you need to perform maintenance or replace the cartridge, quick access simplifies the process significantly.

Versatile Positioning Options Position the filter horizontally for shallow tanks or larger tanks with low water levels, or set it vertically against the aquarium wall to create vibrant currents, customized flow patterns, or even a decorative waterfall feature.

Compatible with a Variety of Environments Designed to cater to freshwater, saltwater, and even reptile environments up to 40 gallons, this multi-purpose filter is perfect for diverse needs. Ensure your aquatic setup thrives in a variety of conditions.