Nutrifield 5kg Coco Coir Brick RHP Certified Growing Medium Coir Peat 55L MediumNutrifield 5kg Coco Coir Brick RHP Certified Growing Medium Coir Peat 55L Medium Coco Brick are lightweight and easy to transport blocks of compressed premium coir. When hydrated, these bricks expand into the renowned, RHP certified, Nutrifield Coco Premium with the same excellent liquid retention and friability properties. The RHP certification ensures that the coir maintains a high level of consistency and quality, is pest and disease free,