Fluval Bio-Foam Pad for U4 Underwater Filter, 2-Pack – A488

Specifically designed for the Fluval U4 filter, the U4 Bio-Foam Pad captures large particles and debris for effective mechanical filtration.

• 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