Description
Fluval Foams 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. Perfectly sized for 404, 405 and 406 Performance Canister Filters Provides the first crucial stage in the aquarium water filtration process
