The Fluval U4 Foam Block dislodges large particles to provide effective mechanical filtration, which is the critical first step in the filtration process.
Custom designed, the Fluval U4 foam block fits snugly into the filter chamber to keep debris out. The pore size prevents clogging and allows for consistent water flow and long-lasting filtration.
Main characteristics
Block dislodging large particles to ensure effective mechanical filtration
Tailor-made design so the foam block fits snugly into the filter chamber and keeps debris out
Pore size that prevents clogging and allows constant water flow, as well as long-lasting filtration,
