Hagen 24-Pack Fluval Aquarium Water Filter with Foam Block for 404/405 Model
Fluval Foam Inserts capture 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. For freshwater and marine environments. For filter models:404, 405.
