Foam blocks for Fluval U3 submersible filter, 2-pack

The Fluval U3 submersible filter foam pad removes large particles for effective mechanical filtration, which is the crucial first stage of the filtration process.

The Fluval U3 submersible filter foam pad is custom designed to fit perfectly into the filter chamber to prevent debris from passing through.

The pore size prevents clogging and allows for constant water flow and lasting filtration.

Key Features:

• Pad removes large particles for effective mechanical filtration
• Custom designed so that the foam pad fits perfectly in the filter chamber and prevents debris from passing through
• Pore size prevents clogging and allows for constant water flow and lasting filtration