Like 20% runoff and all that?I have a small fan providing air circulation. I really don't think it's heat stress and I've kept the soil evenly moist.
Assuming only one plant would show heat stress is a mistake.Didn't get extremely hot. Mid eighties which isn't great but never been a problem before. I know it's a deficiency because I have one other plant of this strain and is showing the same symptoms. What does the attached picture look like to you?