Recently picked up some ac infinity coco bricks thinking to experiment with growing in it or possibly mixing it in with my typical go to potting mix happy frog/ocean forest. A bit overwhelmed by all the info on coco. Mainly about charging with calmag. Package says it's washed and buffered. Does this mean it's suitable as is? Would I be correct to assume I may be needing to add calmag at some point during the grow? Thanks