I am currently doing a closet grow at a friends house. Our grow closet was designed rather hastily and well small. We have 2 400watt hps in a 7'+3'+8' closet, we have a good intake, carbon filter, and circulation It isnt a bad setup if you don't smoke to much but we do. after two low yielding grows I have finally convinced my friend we need to go bigger. I have just ordered a Lumatec 1000 watt hps/mh E-ballast and a Waterfarm 8 pack. What I want to know is what room dimensions would be adequate for 1 1000watt light as we have decided to remodel the closet? We will only be using the one light (I know there is no way to convince him to run a 400watt fill in also as he is kind of a stubborn fuck set in his own ways which is why we are REBUILDING in the first place) Having as many seeds as I have and the ability to only grow 3 plants at a time really sucks.