... sound absorbing wallsl HorticulturePlant rooting, seed starting medium, growing medium, soil conditioner, seed coating, hydroponic, green roofs.l ... & refractories, non-load bearing fill, tunnel walls & pipe coating, floors, masonry, roofs, pipes-leveling, insulationl Air FiltrationPre ... reduce odor & moisture adsorbant, animal feed anti-caking agent & filler, carrier for nutrients / medicines.l ...