Hey man, I'm thinking your heat stress diagnosis was right. Check out this link, the Plant Abuse chart. Has descriptions and pictures of a varitety of problems and tells how to fix them. Really worth a look. I'll also check in the plant problems part of that grow bible I picked up when I get it back from a friend if you want, as its just a little more in depth than that website. Looking great man, check out my babies (link in my sig ) keep up the good work:rasta: