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B&Q£9.99Visit shop B&Q - 4 X Fluval U4 Compatible Plain Foam And 4 X Compatible Polymax Filter Cartridges
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The Finest-Filters compatible PolyMax cartridges and plain foams are designed for aquarium hobbyists using the Fluval U4 internal filter who want a cost-effective way to maintain pristine water conditions. This set excels at controlling green water and algae while reducing odors, though users should note that the PolyMax cartridges require consistent replacement every four weeks to maintain their filtration efficiency.
| Brand | Finest-Filters |
|---|
For optimal performance, the PolyMax cartridges should be replaced every 4 weeks.
No, once the adsorption media is saturated with nitrites and nitrates, it cannot be cleaned and must be replaced to maintain water quality.
Yes, these are specifically designed to be compatible with the Fluval U4 internal aquarium filter.
Yes, it is recommended to rinse the new foam in a small amount of tank water before placing it in the filter to remove any transit dust.
Because these contain chemical adsorption material, they may remove active ingredients from medications; remove the cartridges while treating the tank.
Check the mechanical foams for excessive debris buildup and rinse them in aquarium water.
Ensure that the cartridge is seated correctly in the filter and that your feeding schedule is not overloading the tank.
To install, ensure your Fluval U4 filter is disconnected from the power supply. Remove the filter housing cover and take out the expired media. Slide the new Finest-Filters foam and PolyMax cartridges into their respective slots, ensuring a snug fit without forcing the plastic housing. For care, always rinse new foams in a bucket of dechlorinated aquarium water before insertion to avoid introducing dust or debris. Replace the PolyMax cartridges every 4 weeks to prevent the adsorption material from becoming saturated.
