Fluval U4 Filter Poly/Carbon Catridge (2 pack)

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Fluval Poly/ Carbon Cartridges features two sides for effective chemical filtration, the crucial second stage in the filtration process. The polyester filter pad side filters out fine debris and contaminants. The Carbon side filters out harmful liquid substances, colorants and odors. For freshwater, marine or reptile environments. For U series filter model: U4 Product codes: A492