I am building up both a mental data base, and a picture data base of my grows, all problems and the things I have learned... Now this picture that I took this is nut burn right? That is what I am looking at. I over cooked my plants my meter was tweeked right when the leaves started to curl I flushed everything for a few days and then slowly little by little started feeding them again, on a few of my leaves after about 5 days I am left with these brown tips can anyone explain this better or do I have the right idea.