Very likely. I'll have to get one of those re-settable min/max thermometers for the future.
I always knew they were in fabric pots too small for their size, but have been trying to keep the coco saturated.
Like I said, lesson learned (ie. don't try to grow in coco in a greenhouse, in full sun, in fabric pots that are too small for the plants, in summer).
Worst-case scenario, I've lost a couple of plants that I've invested a lot of time & effort into.
Best case scenario, I've learned something VERY valuable to the growing regime at my place. I've proved to myself that I can successfully take clones in order to salvage the strain & try again. AND there's still a lot of sunlight left this season.
Thanks to
@DustyDuke for the impetus (BASTARD!)