hello all, i recently bought a bunch of black gold soil and a couple blocks of coco fibers.the store had two differnt kinds and i got the more expensive ones. anyways i was woderning if anyone had possibly used a 50/50 mix of the two and how the grow went? also if anyone had tips on coco, i've heard something about that it absorbs the calcium and magnesium* and that it requires a proper flush every couple of weeks and to suppliment with cal mag, is this true? good adive gets rep!!!!!