This lightweight ribbon-type material is commonly used in AquaFalls pond filters in place of lava rock. The flat strapping embossed on both sides creating additional surface area for bacteria. Box contains 4.5 cu. ft. of media, enough to fill (2) MB21 mesh bags. Mesh bags not included.
Advantages over Lava Rock
Lightweight, weighing 10% of the equivalent volume of lava rock
Last indefinitely and has no effect on water quality