i hate to say it but, my vote would be to chop, i didnt think it was that bad, i would try the serenade for a week at most and if its still there chop them IMO.

it sucks after putting so much time into them (when i cut mine i was sooooo mad), but that shit looks fucking crazy, but i would say give it a chance(a week or so) then start from scratch,

i just started my new plants and i added hydroguard from the start, to help eliminate this kind of problem

BTW that shit looks fucking crazy i cant begin to imagine how, you got somthing like that growing in there, my thought is that thats not your adverage mold, so that would have to come from a spore to start it. hmmm... thats fucking weird......