High Temperature and humidity🤢

Sounds like its time to adjust your levels on your exhaust fan to move more air also sounds like you could use a dehumidifier as well . Try adjusting your light height upwards slightly and adjust the brightness as well week 3 of flower they won’t need majority of that light yet . If these items are operating on a timer decrease the intermittent times between “on cycle “ hope something here helps

First move more air. Give it time to adjust, so you’re not chasing the vpd. If that still doesn’t regulate it, then turn off or cycle your humidifier. Also looks like you have all your electrical inside the tent. Personally I would never do that for a couple reasons, one would be fire, two is that they give off heat. Keep as much outside of the tent as you can.

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.

Not super bad of a temp, but open your bottom flaps with the nets to circulate air more and turn the exhaust fan up a tad if not already. Another great way is to get an extension for your driver to your lights and put the driver outside of the tent, this will significantly lower the temp in your tent!

83 not too bad to be honest. leaf temperature is most important. It can depend on strain my Neville's haze absolutely could not stand anything above 80F. but this currant grow my green poison i was showing mag/ potassium deficiency. my tents happened to get really hot a few weeks in middle of summer and they started praying like your are in the picture and the yellow went away. i got over 90 a few days transitioning into flower. That is with running my light on in the middle of the night too. most of the time those temps are pretty excessive but for some reason they needed the warmth. Your plants look healthy, I wouldn't chase numbers too much as long as you dont see any negative happening. The easiers thing to do is turn the light down a little, and move it closer if you need to. that should shave off a few degrees

U have to change day and night, that will lower the temperature and humidity Or -Keep it opened when the light is on -water before light,s on -just lower the temp