Mine gets down to 35 or 40% with lights on and no problem. I have to use a dehumidifier when lights are out to keep in the 50% range.
grey1223 Reviewed by grey1223 on . humidity, how low is too low? I know the ideal humidity is around 50%, the highest I've had mine is 40% after it rained for 2 days, but it wants to stay around 30%, and even sometimes down to 25%. I've tried leaving a butter bowl with water and even just spaying water in my grow area. it's a pretty small space, about 3'x3'. how low can it go before I should be concerned? and does anybody have any better tips or tricks? Rating: 5