EasyFeed Cannamix 16L coco brick. Swells to the exact size of the pot. The EasyFeed Cannamix coco bricks take the effort out of filling fabric pots with loose heavy medium. Storing, transporting bags of medium is thing of the past. The bricks are simply placed in the bottom of the fabric pots then, when watered swell to the top of the pot but do not swell sideways. This results in a perfectly square pot. The EasyFeed coco bricks are made by Pelemix who are professionals in coir substrates. Washed and treated. Buffered to EC-0.5 Coco Coir blocks are fast becoming one of our most popular mediums as they are small and ideal for new urban gardeners.