Soil and coco do mix well; it's actually an ingredient in a couple of the better quality bagged soils. You just have to be certain that it's not going to scavenge calcium from your nutes. I'd mix in just a small amount of bone meal if you're going to add any significant amount of coco to a soil.
stinkyattic Reviewed by stinkyattic on . 3 Week Old- problems Looking Good? Rating: 5