Fluval 404 Foam Filter Block - 2-Pack

These work perfectly fine with Fluval's latest. I am using them with their newest 406! Results are very good so no worries.

These foam filters are easy to install and fit perfectly in my fluval 405 filter. I usually rinse them 2 or 3 times before I replace them, and they've worked really well for me.

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This is much better than filter floss, especially in a Fluval filter. Perfect fit and catches all of the things that the rest of the filter can't handle.

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Pros: Fits, Works, Filters

Cons: Not as 'tight' as the originals Are a pit more 'porous'. They work though.

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The pore size is so much bigger and not as dense compare to the original one that came with the canister, I'm a bit disappointed....

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