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 U2 range of internal filters. Please note: There is no poly side to these filters. They are just Activated Carbon impregnated foam.
This is not a Fluval Product. This is a Finest-Filters alternative which serves the same purpose as the origional brand.
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