Nutrifield Coco Bricks are made of the same RHP quality coco as Nutrifield Coco Premium Organic Plant Medium. They are made up of 100% coco coir that is compressed and packed to ensure ease of transport, storage and handling. Coco Premium Organic Plant Medium in a Compressed Form Nutrifield Coco Bricks are pre-buffered and thoroughly rinsed to remove excess salts and impurities. They are pH stabilized and have an incredibly low salt index which provides an optimized growing environment for your plants to thrive in. Nutrifield Coco Bricks are made following the strict RHP certification guidelines to deliver the best quality of product available in the marketplace. Fast Expanding Brick Which Is Easy to Transport, Store and Handle Nutrifield Coco Bricks arrive dried and compressed which makes them incredibly easy to transport, store and handle. Place them in a container with the prescribed amount of water to allow rapid expansion. Nutrifield Coco Bricks will maintain the essential 30% air porosity which will create ideal growing conditions for healthy plants. Nutrifield Coco Brick comes in 650g and the Nutrifield Coco Mega Brick comes in 5kg.