Coarse Filter Media Roll 2" x 28" x 10' - BLUE (boxed)

This is a coarse-density biological filter media which has an open weave to allow water to flow freely while providing a colonization media for beneficial bacteria.

Biological filter media should only be cleaned when you do a whole pond clean-out like in the spring.

Large bulk roll of filter mat material. Cut into replacement filter mats or smaller pieces to make biological media to save money!