Ever since I brought my clones ( 2 mental floss, 1 purple kush) under my HPS light with my purps, it has gotten powdery mildew on the leaves. It is starting to really worry me that they will affect my beautifully flowering 4th week purps, which have so far stayed remarkably unaffected. I was thinking about bringing them back under my CFL's and putting their light cycle back to 18/6. Would this work? are the plants able to revert back to vegging and not be stressed too much, I understand it will probably not be good but I plan to give them a few weeks to chill and get back into the flow of vegging. They are currently midway through the 2nd week of flowering.

Should be fine... They'll revert if you put them back in a 18/6

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