Cocos A&BGrowing in coco coir has a multitude of benefits and is one of the most popular forms of growing media for good reason. That being said, it takes a precise ratio of nutrients to take full advantage of those benefits: one of those being the right ratios of soluble macronutrients and magnesium. These proportions are perfected in Cocos A&B. Cocos A&B was formulated to provide those who grow in pure coco coir or blends that contain 30% or more coco coir