These are replacement biofilter pads for the Tetra ClearChoice PF-1, PF-2, PF-3, and submersible filters.
Be sure to change your pads often. This will keep your ClearChoice filter operation at maximum efficiency. Includes a set of 2 pads. Carbon and course.
Works with the PF-1, PF-2, PF-3 and Submersible ClearChoice Biofilters.