I think Ken's experience with keeping his greenhouse cool is probably pretty good for Sunnie's question.
She might need 70% shade cloth for the next month or so to keep the brugs alive in there.
In the meantime, Sunnie, I hope either the weather is cooler or you have put a (cheap, reflective) tarp or something over that greenhouse to shade it in the middle of the day? Poor brugs could surely cook if it gets hot again before you get the shade cloth on there.
