Blocs de mousse Bio-Foam pour filtre submersible U3 / Paquet de 2

The Fluval U3 foam block removes large particles for effective mechanical filtration, which is crucial for the filtration process. It fits perfectly in the filter chamber to prevent debris from passing through.

• The description claims that the Fluval U3 foam block removes large particles for effective mechanical filtration.
• The description claims that the design ensures the block fits perfectly in the filter chamber to prevent debris from passing through.