Fluval U BioMax 110gm For Fluval® U Series Underwater Filter models U2, U3, U4 Fluval® BIOMAX provides an optimal environment for the colonization and growth of beneficial bacteria. The unique bio rings have a complex pore system that provides an...

Fluval U2 - Poly/Carbon Cartridge (2pk) The Fluval® Poly/Carbon Cartridge has two sides that combine to provide thorough and effective chemical filtration, the crucial second stage in the filtration process. The polyester filter pad side filters out...

Fluval U2 - Foam Pad Specifically designed for the Fluval U2 filter, the U2 Foam Pad captures large particles and debris for effective mechanical filtration. Mechanical filter media Fits perfectly inside the filter chamber to prevent debris from...