Yeah hes right. You are hitting 16oz per 600w which is mediocre mate you should be hitting 25 per 600w to get the gpw. Thats easily achieved growing horizontal. Plus I read your thread, you cant even hit 1gpw and post 48, you fucked up your plants and need help. Then trying to school us.
Show me one place in this thread where I tried to tell anyone how to grow. Pretty sure I've only provided my experience and scientific facts. If by "schooling" you mean being taught science, yes, I've been "schooling" you all.
These plants look like I fucked them up and needed help right? If you read any further you'll notice I corrected the problems myself, with some input from a veteran Mr. D.