Plants are really cool in that they will start to droop when they are in need of water. If you keep notes on the dates/times/ratios and overall appearance when you are feeding them you will start to see a pattern evolve. Eventually the pattern (as it relates to timing) will stabilize and...
Consider a pot sized somewhere between the cup that has your plants currently and that enormous thing you have in this picture. Your first plant looks like its doing good but you and I both know it was a bit of a challenge. And that was because you went from a cup to a giant pot. Anyway, just...
Walking my dog in a camp ground in South Carolina early in the morning and found a about an eighth next to the boat launch. I was STOKED. It was decent weed.
I think he said S. Pacific - like the amazon rain forest. My assumption was that he knows he wont get it any cooler inside the tent than what is outside the tent. He may just be maxed out without A/C.
Oh yeah, you got bugs. Ok...so I hear you on the air evacuation...what about that filter? Do you really need it? Also, with your humidity it might be an issue. You might try pulling it off temporarily to see how it affects your temps? Maybe its plugged or restricting for some other reason...
I thought you said it was a controlled env - the garage? I keep my tent in the garage too and leave the door wide open during the day almost every day. Spiders, stink bugs, centipedes...all kinds of critters go in there. Sometimes, they might eat a little bit before I spot the harmful ones...
Make sure you hoist that carbon filter up to the top of the tent to pull that hot air out from up high. Also, it would be good if the mesh openings you speak of are at the bottom of your tent. This allows the cool air to flow through the vegetation. Be mindful of root zone temps at night if...