Fluval U4 Bio-Foam

Bio-Foam Pad for U4 Underwater Filter, 2-Pack
 
Specifically designed for the Fluval U4 filter, the U4 Bio-Foam Pad captures large particles and debris for effective mechanical filtration.
 
Features
 
Mechanical filter media
Fits perfectly inside the filter chamber to prevent debris from escaping
Ideal pore size allows efficient water flow, less clogging and long-lasting filtration
Suitable for freshwater, saltwater or reptile environments
Convenient 2-pack format
2 x foam pads included