With all the hype about all the fertilizers it's very easy to over feed them. The truth is that they are fed very little. A couple of weeks of non feeding and then a couple of weeks and your into flowering. It's knowing what and when to feed them. I started flowering my White Widows 2 days ago and you can follow my thread "White Widow Pic" as I grow along. You can tell that you over fed them cause even your smallest leaves show signs of it. Happy Toking