thanks for the feedback guys, i'm going to scale it back and run 2'x2' w/ 250w HPS. This will make heat control a lot simpler, although i have plenty of space outside the cabinet to set up fans etc.

Also i intend to grow 9 inside, in a 3x3 grid. Using 6"x6" pots this will give me about 3" of space around the perimeter.
vannewb Reviewed by vannewb on . What's the right size cabinet for a 600w hps? I'm going to make a basic square cabinet. - 600w HPS hanging from the top. - temperature activated fan to cool - Black & White poly on all the surfaces. - 6" square pots (each 1 gallon) with soil - standard grow nutrient, but no co2. How big should the cabinet be? Rating: 5