Royal Gold loose coco fiber is designed for hydroponic use, but also works well with pots and beds and all other growing techniques. Seedlings, cuttings, and rooted clones thrive in Royal Gold Coco! We steam pasteurize our coco to guarantee against any unwanted weeds, seeds, and bacteria. We have the highest air porosity rate of any coco on the market with 40% air porosity rate. This means higher yields with greater consistency in finished product. Be sure to feed often at the recommended application rate from any complete nutrient system. It is recommended that you use either a coco specific nutrient or supplement Calcium and Magnesium as coco soils use this at a higher rate.