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FLUVAL 204-206/304-306 Foam Filter Block

  • For the 204-206/304-306 filters

  • Fluval Foam Block

  • Captures all particles & debris, no bypass

  • Allows efficient water flow, clogs less, lasts longer

  • Enhances biological filtration

  • For freshwater and marine environments

Availability: In stock


Product Description



The Fluval Foam inserts are custom designed to fit the 204-206/304-306. The foam blocks capture large particles for effective mechanical filtration. They fit to prevent bypass and have a pore size that allows efficient water flow with less clogging for long-lasting filtration. These inserts also enhance biological filtration. For freshwater and marine environments. 


Fast Nationwide delivery!

Petworld now offer FREE delivery on orders over €50.

Orders under €50 incur a €4.95 delivery charge.

We aim to dispatch orders within 48 hours

All orders are sent via DPD tracked & signed delivery. (If you are not in they will leave a slip to arrange a suitable delivery time for you).



  • Should you not be happy with your product you can return it undamaged within 14 days. 
  • To obtain a full refund, please keep items in original packaging with all tags and labels intact.
  • For larger items we can organise an uplift via DPD who will collect the item at your house at a time that suits you for a fixed price
  • If you have any issues or concerns please give us a call