Bob, I think you're right right but the temps at 85 is too too hot, but then I looked at the pics again and with the spotting and leaf tip curl, it could actually be a combination of things. The leaves looked like they're starting to wilt some but I don't know if that's from an overwater condition since it's hydro or what. Lack of control is a problem with hydro grows. You really got to know what you're doing. I hope these problems can be solved.