S SAVHOME FBA_TL-CB11 2018 Upgraded Electric Bug Zapper, Insect Killer Coco peat coir brick washed with R.O (Reverse Osmosis) water. Free of chemicals, harmful viruses & soil-borne diseases 11lb makes 18 gal of grow media, use with any hydro nutrient Best medium for high moisture & air retention with perfect CEC and low E.C. Eco-friendly medium fine pure organic coconut peat Safe to use as matting and bedding for pet or reptile terrariums.