2 x Compatible Fluval 404/405/406 Foam

You are buying a pack of 2 compatible filter foam pads to fit the Fluval 404/405/406 range of external filters.

These pads are made from exactly the same material as the Fluval originals, just offering a massive saving.

The sponges contain the biological cultures, for purifying your water, whilst also mechanically filtering the water by removing particulate waste.