Quote Originally Posted by turtle420
Ok, update... I would be using the 400W MH to grow the plant, then the 600W HPS for the flowering...

9plants possible? 19" x 29" ?

Thanks!
-turtle420
From clones you could do a SOG in an area that small. The plants need to flower fast and only finish about 18"-24" tall at most. Any bigger and you will have lumens problems as well as airflow problem. You could end up with a lollypop type grow where the bottom is bare and the top single cola is the only thing with flowers.