Hmm, that sounds close if not it. The only thing is that I never brought any sort of wood into the growroom and the soil doesn't have any wood or manure in it. Also, mine aren't on the top of the soil or leaves at all, just the drainage holes. Maybe they got flung there?

I read your spider mite post and kinda decided against that, I think your more on the right track with the fungi.

I wonder if I should just go ahead and transplant today, maybe it will cure the problem.