Well, I know lower humidity is ideal for flowering... I've read about 20-30% RH is ideal.
I thought I would be all set because I live in a semi-arid climate and my humidity through veg was about 20-25%. Well now that these plants are big and transpiring they're kicking out a lot of water! I think it's about 45-55% RH now.
When do you start having to worry about problems with mold?