Fluval Canister Bio-Foam Filter Block Value Pack, Models 306/307 Subcategory_Filters - Corner consisting of highly durable foam

consisting of highly durable foam filters that intercept and trap dirt and debris

Extended length gravel tubes are ideal for taller aquariums

This formula is recommended by groomers

Dimensions (L x W x H) BFA Item # 4

these stream pumps can be positioned anywhere: on the sides

Fluval Canister Bio-Foam Filter Block Value Pack, Models 306/307 Subcategory_Filters - Corner consisting of highly durable foamDesigned specifically for the Fluval 306 and 307 performance canister filters, Bio Foam captures large particles and debris for effective mechanical filtration. Mechanical & Biological filter media Custom fit to prevent debris bypass Ideal pore size allows efficient water flow and longer media lifespan Enhances the biological filtration process Convenient 6 month supply (2) A188 Blue BIO FOAM MAX, (2) white A222 BIO FOAM & (2) A237 black BIO FOAM+