PBH / Nature's Media Amendment - 1 pallet - 50 lb bags/16 ctMany growers have already learned that PBH Nature's Media Amendment, a par boiled rice hull amendment, is the ideal replacement for perlite. Some of its advantages include: Less dust when you mix with other substances. Lower in cost Remains stable over the planting cycle, but once mixed decomposes over time Packaging is compressed: 4 cu. ft. bag yields approximately 7 cu. ft., reducing storage, handling and freight costs Processed to insure purity: no