Finest-Filters 8 X Compatible Carbon Foam Filter Pads To Fit Fluval U3 Range Of Internal Filters

Our carbon filter pads are intended as an alternative to the poly/carbon cartridge and offer excellent chemical carbon filtration in the aquarium. These filter pads are cut to fit the Fluval U3 range of internal filters. Please note: There is no poly side to these filters. They are just Activated Carbon impregnated foam.