Black Biological Filter Media 2 foot x 25 foot, Misty Mountain.
Misty Mountain Pond
Black Biological Filter Media 2' x25', Misty Mountain. The open stroma is all-natural and coated for longer life. The open stroma disperses water and reduces channeling. It maintains its effectiveness for a much longer time than conventional aggregate medias, and this frees up your time and allows you more time to enjoy your fish.