I'm not sure how or what I did to them but on some the leaves are rapidly yellowing, and I'm getting brown hairs. They are at 8 and one half weeks today. I'm thinking it must be over-fertilization, I went with a half strength commercial fertilizer, my habitual fertilization routine which would be a 10-10-10 after dilution, still way to strong I'm thinking. It always worked for my afghani indica I've grown for years, etc., etc., .......
These latest pics with the 1000w HPS off show the yellowing as of today......