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.
Filters debris and provides optimal biological filtration
Simple to install and maintain
Silent and efficient; This filter pump is suitable for use in water temperatures upto 35°C
Ideal supplemental or stand-alone filter, or for installations where external filtration is not possible
Comes with 3-Way flow control with adjustable output, 2-Foam pad, 2-Poly/carbon cartridges and 90-Grams BioMax; Ideal for 34-65-Gallon environments
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