Does anyone out there happen to have the 2014 Grow Guide that is supposed to come with the lights? I ordered the 650 xml and just starting on my first grow. If I had more experience, I could figure it out myself. In my case it's like having any piece of electrical equipment without an instruction manual. As far as I know it gives details on light intensity and distances throughout the grow cycle. I thought I'd try here first as their products are great, but customer service lacks with my experiences. Thanks.