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you say your lung room is good but inside your tent isnt, then your answer is to turn over air faster in the tent

Your temperature is not bad, you want it preferably under 80 degrees in flower. The humidity however is what’s concerning. With it that high your exposing it to the possibility of mold. The buds just won’t be able to stay dry. I’d try more ventilation/circulation in your tent. You’ve got to get that humidity closer to 40% if possible.

stronger AC unit or run at night? portable ac unit for that room? Can't call it a conditioned lung room if it can't control the temperatures. Or, is it the offset between inside the tent and outside that is the problem? If so you need to exchange air faster from lung to tent.. exhaust warm air outside, if necessary. But, if equipment is struggling and these small things can fix it, it's still under-sized and probably not going to last long while over-worked. I burned out an under-size dehum within 3-4 years. I only grow in fall/winter based on how these things average out with my seasonal temperatures. A choice between added costs or sticking to a time of year that averages out to decent Temp/RH range for growing. each to their own... stay under 30c as best you can. 30c is not a hard line in the sane. you'd probably be fine at 32 or 33, too. Higher RH will mitigate higher temperatures -- refer to a VPD table to properly mesh temp and RH... as long as RH isn't higher than 65% it's not high-risk.