I haven’t seen it get any hotter than 82-84 before I caught it quickly (2-4 hours only). It was the first time i zipped up the sides of the enclosure. That obviously kept the heat in a bit more.
I’m going to take some pictures of the temp throughout the day so I have a reference to look at tomorrow.
Thanks for the suggestions on the pH meters. I got one off of amazon that came all scratches up. I didn’t know to trust it or the drops, but they were different. I’ll buy one of the brands you mentioned for a second/third opinion 
Thank you for your solid advice!