I switched to 12/12 9-10 days ago and all 3 plants are showing fem. pre-flowers a few days asho.

The pure power plant (front picture 10" untied) of course would be as its the fem from nirvana and it has the most budsites that look promising. Im happy both the bagseed turned out to be female as well
One bagseed is bushier(top 6") than the other(right6").

My humidity has randomly gone from 50 to 70 for no apparent reason. How can i keep it down? And i think that is causing my problem, bc it seems some mold is forming in my soil, but not on the plant at all. I can fix this right and still have buds if i keep kill the mold and keep it clear of the plant, correct?