Thanks to everyone for their posts. I learned a lot from each of them. You're right about the burn. I don't know if it was heat or nute burn as I was feeding them every other time, but the time when it should have been water only, I was putting in additiives like Nirvana, Open Sesame, and Floranectar. I was doing that for all the plants, but not every one burned. How many mistakes can a person make? When I think that I've made every one of them, I do something else wrong. Haven't had a good grow in more than a year. I really appreciate all of your replies.