It is custom-made to fit perfectly inside the filter chamber to prevent debris bypass. The foam pad has a pore size that allows efficient water flow, less clogging and long-lasting filtration. Suitable for freshwater, marine or reptile environments.

Key Features:

• For the Fluval U3 Underwater Filter
• Captures large particles and debris for effective mechanical filtration
• Custom-made to fit perfectly inside the filter chamber to prevent debris bypass
• Has a pore size that allows efficient water flow, less clogging and long-lasting filtration
• Suitable for freshwater, marine or reptile environments
• Includes 2 foam pads