You are purchasing a pack of Finest Filters compatible foam pads / polycarbon filter cartridges / biomax suitable for the Fluval U series range of aquarium internal filters.

We stock a complete range of filter media for the Fluval U2, U3 and U4 filters. Please select your model filter from the drop-down menu above.

Next, please select whether you need plain white foams (outside frame in the filter), polycarbon cartridges (inside frame in the filter), biomax (inside centre blue chamber) or sets of filter media.

NEW - We now also stock compatible biomax which is suitable for all models of filter. These are packed in 170g bags and can also be ordered with your foam / polycarbon cartridges to provide a complete replacement media set for your fluval U series internal filter.

Please refer to the images when selecting the filter options from the drop down menu. If ordering the sets with biomax, 1 x 170g bag will be supplied with the 4 foam and 4 polycarbon set. 2 x 170g bags will be supplied with the 8 foam and 8 polycarbon set. 3 x 170g bags will be supplied with the 12 foam and 12 polycarbon set. Please Note: we sell the 4+4, 8+8 and 12+12 sets by themselves, and also with biomax. Please ensure you have selected the right set you require from the drop down menus, and check the image displayed.

We now supply compatible PolyMax / PolyClear cartridges in U2, U3 and U4 filter models. The PolyMax controls green water and unsightly algae growth by adsorbing and trapping phosphate, nitrite and nitrate effectively producing crystal clear water, reducing odours, and ultimately creating ideal conditions for both fish and plants.

Regular replacement of the filter pads and biomax in your filter will ensure that your filter is running at its best.

Please Note: These are NOT original spare parts - these are compatible filters manufactured by Finest Filters.