Bio-Foam Blocks are specifically designed for the premium performance FX5 and FX6 canister filters.
Thanks to their porous structure allowing to welcome beneficial nitrifying bacteria which will proliferate there, these blocks of foam carry out at the same time biological and mechanical filtration.
They also retain the small particles that have escaped the filter foam during the first stage of filtration.
Main characteristics
Better biological filtration efficiency
Filter media that effectively traps small particles and debris
For freshwater or saltwater aquariums
