Fluval U4 Underwater Filter for Aquariums

Primary and Supplementary Filtration

Use this filter as a primary solution for smaller aquariums or a supplementary choice for larger tanks. Its versatile design makes it adaptable to various filtration needs, ensuring clean water and healthy aquatic environments.

Sleek Design and Easy Maintenance

Featuring a sleek design with an easy-to-grip water control panel, this filter is both stylish and practical. Incorporating a redesigned media cartridge, it effectively traps more debris, reducing maintenance requirements and maintaining water clarity.

Quick and Easy Access

A convenient flip-top lid allows for swift and simple access to the filter cartridge for maintenance or replacement. This ensures that you can keep your aquarium clean and operational without fuss.

Versatile Placement Options

Position the filter horizontally for shallow tanks, larger tanks with low water levels, or to create a decorative waterfall feature. Alternatively, install it vertically against the aquarium wall to generate currents or customize water flow patterns, enhancing the aesthetics of your tank.

** Compatibility with Different Environments**

Suitable for freshwater, saltwater, and reptile environments up to 65 gallons, this filter delivers consistent performance across diverse aquatic ecosystems.