The CANNA COGr board is a compressed slab which consists of a sophisticated mix of coconut grit, coconut fibre, and coconut granulates. The COGr board has the unique property of being able to absorb a large amount of nutrients, moisture and air, which is made available to the plant immediately. As the COGr board is delivered dry and in pressed form it is ideal for transportation!
Hydroponic Coco Mediums Tested:
Issue 010 - Volume, EC, pH & Buffering - Read it here