Coco Chips are added to potting soil or mixed with Coco Peat to regulate the aeration of growing medium and maintain the ideal air to moisture ratio for the plant roots. Husk chips are cut pieces of the husk of the coconut. They are available in different sizes from very small scraps up to bigger lumps. Husk chips have different applications. They are a good bedding ground in a terrarium. They are also an esteemed potting soil for orchids with their air roots.