A special blend of coir chip and natural material. The selected raw materials are five times washed, blended without fine dust particles to make grow slabs for the required sizes. Slab has very high air fill porosity, moderate water holding capacity and balanced pH with very low EC and Sodium (Na) content. Grow slab has evenly distributed martial mix packed in UV stabilized co-extruded bags. Visit us at: https://www.riococo-mmj.com/product/pcm-grow-bag/