High humidity when lights are off

High humidity in flower is an open invitation to bud rot and mildew. Try and get the humidity down to the 40-60% range. Get a dehumidifier if necessary. What’s the rh when the lights are on?

Other than with seedlings I like to keep my tent at less than 60% rh. My current grow has been hovering in the 40-50% range and the plants are thriving. Also remember that the rh you’re measuring is where the meter is, if it were in the plant canopy it would be higher.
It's on the same level with the plants its that okay ?
 
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