#1.2 a light is pretty good. If he went crazy with plant numbers I wonder what he could achieve with 20 plants lollipoped in 1-2gallon pots.
i told my friend many times he would get better than 1.2 a light if he upgraded his pots to 5 gals, but he hasnt. his plants are rootbound as hell yet still yeild two zones each....they are vegged about a month and only topped once. im sure with 5 gal pots, and more topping supercropping he would get 1.5 a light...