Seems like you are peeking the growth now with those values, heard people discuss the optimum temps for LED vs HID and 31C is perfect condition and with that seemingly low RH you got its perfect. Think I had like 34-37C at max with the 400W HID and that gave them burns, had a big floor standing oscillating fan constantly blowing at them and this was without any tent.It's hot enough alright! Ca. 31C and 40% RH in the tent right now, and there's nothing I can do about it. It could be worse seeing as the ambient temp is 28, so the extractor at max blast with disconnected filter seems to be able to move most of the heat from the light. I've tried cooling the room with a huge fan, but it's basically just blowing hot air around There's a bit of canoeing leaves, but otherwise the plants seems to handle it. From what I read though, these conditions seriously stunt the growth and bud density of the flowering plants...
That's right, its not that much in degrees to win by moving them outside the tent. Why I have my drivers outside is pure esthetics...The datasheets for the LED power supplies says they have efficiency of 0.9 or better, so there'd only be 30W of heat to be saved by moving them outside the tent, and then they would heat the room a little anyway.
Also right, the draft from the fast exchange of air from a small enclosure is more of a cooling effect than with open tent.Edit: tried the big fan in the room again in a different spot and with an open tent - it got hotter by more than 1C at canopy level, so not a good idea. The extractor fan alone does better job with a closed tent.
I also get knocked off my feet with this damn heat... Get blistering migraine from the sun after the accident. Seems like most plants get burnt now days, we must be putting some real bad chems in the air we don't even know about yet... What do you put in that drink holder, beer? I wished a few years ago I had a beer holder on my lawnmower but now I don't drink any beer any more, just Zero... Haven't had a beer in 3 years now, I even got beer in my fridge that passed its drink day last year... LoLThe plants may seem to cope better with the heat than me - I'm pretty much knocked out. The greenhouse is too hot as well, and I have chillis that has burns. I'm about to cut the grass now - have mounted a drink holder on the lawn tractor, only missing a huge sombrero...
Luckily I got hold of a discarded mobile AC from work a few years ago I salvaged, had a busted hot side fan. Put a bigger Österberg inline fan outside on my balcony and drilled a hole in my balcony door to vent out the hot air with the door closed for better cooling. Could use it for the grow but as you say there is another 800W on the electrics an hour for every hour the grow is in operation and that literally doubles the expense for each gram of weed...The first summer grow is a lesson in heat management, or rather the lack thereof... I really need an AC for the room/tent, but the price of buying and running one is out of the question for now (not being cheap, simply don't have the money). When one has a decent stash, a growing pause at summertime seem the right way to go. Pulling the brakes on the overlapping grow is kind of inconvenient though; I'd have to throw away healthy plants, and I can't bring myself to do that. Well, this is purely a luxury problem - no complaints, just observations
I'm also having a hard time throwing away healthy plants so try keep running for as long as you feel its possible, always nice to explore the limits of whats possible. You know me by now and I've been there as well, I even know the limit of my own body by now.
Looking forward to some pics soon, miss growing a lot now and already looking forward to fall in comparison to this unbearable heat. Work is even pleasant now with constant 8C in the cellar under the plant.
Stay safe Cosmos!