Cloud Coir is a ready to grow RHP certified blended coco coir and perlite medium. One of the most important elements a plant needs to grow is oxygen at the root zone. Cloud Coir is a 50/50 blend of perlite and coco coir. Cloud Coir is the perfect ratio for roots to thrive and not become over saturated allowing for better nutrient uptake more frequently. Cloud Coir has received RHP certification from Holland. This assures our customers that Cloud Coir is made using the highest standards in the industry.