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B&Q£13.49Visit shop B&Q - 4 X Compatible Foam And 4 X Polymax Filter Cartridges And 170G Biomax For Fluval U3
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Designed for aquarium enthusiasts using the Fluval U3 internal filter, this comprehensive media set is perfect for hobbyists looking to maintain a pristine aquatic environment through consistent mechanical and biological filtration. The kit provides a complete refresh of your system's filtration capacity, effectively controlling algae and odors while supporting a healthy nitrogen cycle. However, users should note that the PolyMax cartridges require regular replacement every four weeks to maintain their chemical absorption effectiveness.
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The PolyMax cartridges should be replaced every 4 weeks, while foams and Biomax can be rinsed and reused until they show signs of physical degradation.
No, these are specifically sized for the Fluval U3 internal filter and may not fit the U1, U2, or U4 models correctly.
It is recommended to give the foams and Biomax a quick rinse in dechlorinated aquarium water to remove any loose debris before installation.
This media is designed to be chemically neutral and should not significantly alter the pH of your aquarium water.
They are designed to adsorb phosphate, nitrite, and nitrate to control algae and maintain high water quality.
It is not recommended, as rinsing them can reduce their chemical adsorption capacity. They should be replaced as scheduled.
Check if the foam pads are clogged with debris. Rinse them in a bucket of aquarium water and ensure the intake slots are clear.
Ensure you are replacing the PolyMax cartridges every 4 weeks, as they lose their ability to adsorb phosphates once saturated.
Verify that all filter media is correctly seated in the housing with no gaps that would allow water to bypass the filtration layers.
To install this set, first unplug the Fluval U3 filter and remove the cover. Discard the old, saturated PolyMax cartridges and used foams. Rinse the new beige foams under dechlorinated water to remove any manufacturing dust. Insert the new foams and the 170g of Biomax media into their respective chambers. Secure the new PolyMax cartridges as instructed by your filter's specific layout. Care for this system involves a monthly maintenance routine: replace the PolyMax cartridges entirely every 4 weeks. Rinse the foam pads in aquarium water—never tap water—to preserve beneficial bacteria. Ensure the media is not packed too tightly, as this can restrict water flow through the filter pump.
