Quote Originally Posted by bud luv
DH = Dehumidifier.

Without it your plants will be moldy. You must have one with hydro, there are no exceptions. :jointsmile:
Well here I have to disagree. I've never used one. I'm pretty sure others don't use them. I would not buy one until I know I need one, and I would not put one in if I already had it, just because someone says I should. MJ likes 60 humidity. If anything I need a humidifier, since mine rarely goes above 30. If you get mold you need more ventilation, not necessarily a dehumidifier.

Like I've always said, I like to put a humidifier and a dehumidifier in a room and let them fight it out.