russrahlanswered grow question 4 years ago You wanna get that humidity down. Better too dry to quick then too slow. At 70% humidity it won’t take long at all for mold to set in. If you have a dehumidifier use it ASAP. Preferably one with a humidistat to set to around 50%. If not you can put it on a timer to go on for say 30min every 2hrs or something like that. Whatever you can do to get it down. An exhaust fan pulling the humidity out will help too. Cheer 💨