The Fluval Foam Filter Block for the 204/5/6 & 304/5/6 captures large particles and debris for effective mechanical filtration, the crucial first stage in the filtration process. Custom fit to prevent bypass, they have a pore size that allows efficient water flow with less clogging for long-lasting filtration. These inserts also enhance biological filtration.
FLUVAL Foam Filter Block;
- For freshwater and marine environments.
- For Fluval filter models: 204, 205, 206 & 304, 305, 306
- Contains 2 Foam Blocks