I've had some Natalensis colonising for the past few weeks and have just put it into fruiting. It is a rye grain cake that I've cased in about half an inch of vermiculite, though the mycelium has just flown through the casing and is rapidly making a thick blanket of overlay. It is pretty much covering the whole top and has nearly devoured the whole casing layer, what the heck do I do? Am I just going to get no fruits?