if you're thinking of using a 400WT,a 3x3 area will get max results,from seed you want one plant psf(9 plants)induce photoperiod when they are no more than 8",after you remove the males, judge which of the plants was the best(yeild,potentcy)and use it to get cuttings,you may have to regenerate veg growth,but the offspring tend to grow more compact,enabling you to grow more plants in the same size space,and save 1/3 of the overall growing time,you can theoreticly harvest up to 16 oz. every two months....bonbon