I keep my sensor probe about 1" from the grow area top, and try to keep tips in upper 80's, low 90's/high 20's, low 30's. (I"m in a closet with CFL & limited ventilation)

In a grow room, with an oscillating fan, temperature should be pretty much evenly distributed. If there's no fan, why not?
Volker Reviewed by Volker on . Temperature at plant top I have read loads of temperature posts that for the most part address ambient air temperature in the grow room. I believe the temperature at the plant-top level would be somewhat higher than the "room" temp. Has anyone any information on the temperature is as the level of the leaf? Thanks, great forum. Rating: 5