Fluval Foam Filter Block for 406

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16 In Stock 16 Products.


Fluval Foam Filter Blocks provide effective first-stage mechanical filtration for Fluval 404/405/406 model filters. These foam blocks are custom-fit to trap large particles 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 404/405/406 filters

The additional filter surface area provided by this foam also enhances biological filtration.