Look Four Pack Multicolor Matala Pond and Koi Filter Media 19x24

One each of the Gray-Super High Density, Blue-High Density, Green-Medium Density, and Black-Low Density filter mats.

4 Pack of Matala Mat Filter Pad 19" x 24" x 1.5"

The open, highly aerobic tri-dimensional structure of Matala Filter Media promotes healthy water conditions and ease of cleaning in in a wide variety of filter designs.

This is simply the most effective, longest lasting, crush res