Fluval Filter Foam Block

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Fluval Foam Filter Blocks provide effective first-stage mechanical filtration for Fluval 204/205/206 and 304/305/306 model filters. These foam blocks are custom-fit to trap large p articles and debris, with an ideal pore size to allow efficient water passage and prevent clogging. Traps particles and debris for mechanical filtration Pore size allows efficient water passage with less clogging Safe for freshwater and marine aquariums For Fluval 204/205/206 and 304/305/306 filters The additional filter surface area provided by this foam also enhances biological filtration.Dimensions: 2.74"L x 1"W x 8.5"H Show more