Fluval U4 Internal Filter

Fluval U4 Internal Filter for Marine or Freshwater Aquariums 130-240 litres

Bio and Mechanical Filtration
Provides complete and efficient 3-stage filtration, including BioMax biological filtering, to create superior aquarium water quality
For fresh, marine and reptile environments
Adjustable 3-way flow control feature lets you position the water flow output to meet your specific needs
Top Output setting provides maximum circulation and oxygenation
Integrated Spray Bar setting provides a gentle, even flow for planted aquariums
Bottom Output setting is for deepwater agitation
Convenient flip-top lid allows quick and easy access to the filter cartridge for maintenance or replacement
Can also be placed horizontally in shallow water tanks or to create decorative features such as waterfalls
Can be installed vertically against the aquarium wall to create currents or customised flow patterns

Fluval U4 Underwater Filter provides complete and efficient 3-stage filtration, including BioMax biological filtering, to create superior aquarium water quality.

The U4 Filter includes practical and versatile features, making it ideal for application in fresh, marine and reptile environments.

The filter provides the option of setting the flow output in 3 different positions, a key benchmark in underwater filtration.

The adjustable 3-way flow control feature lets you position the water flow output to meet your specific needs.

The Top Output setting provides maximum circulation and oxygenation, the Integrated Spray Bar setting provides a gentle, even flow for planted aquariums, and the Bottom Output setting is for deepwater agitation.

The filter also has a convenient flip-top lid that allows quick and easy access to the filter cartridge for maintenance or replacement.

The filter can be installed vertically against the aquarium wall to create currents or customised flow patterns; it can be placed horizontally in shallow water tanks; or it can be used to create decorative features such as waterfalls.