FoxFarm Big & Chunky Perlite, 4 cu ftWhy does FoxFarm call it Big & Chunky? Extra big chunks of perlite provide the best drainage for superior root aeration. Use it in containers with Ocean Forest or Happy Frog Potting Soil to improve drainage, keep roots oxygenated, and prevent plants from becoming waterlogged. Hydroponic growers know that Big & Chunky is the ultimate hydroponic grow medium. Use it as a stand alone product or combine it with FoxFarm's Light Warrior Agro Ponic Grow