The CANNA Coco Brick is a brick version of the brands premiere Coco medium. CANNA Coco Bricks are specially designed to hold more water; helping it expand quickly. CANNA Coco Bricks are buffered for use, meaning CANNA has taken preventative measures to ensure the coco will not absorb the nutrients meant for your crops. Because of their shape, CANNA Coco Bricks are easy to store. Buffered to prevent nutrient leeching Hold more water and expand quickly Contains 2 individually wrapped 20L bricks.