actually there are some factor's to this...i have a 150watt hps i use to veg with and can fit 20 1 gallon square pot's under it in a 3x2 area.. you could veg them for a short time then flower, giving you several 1 foot to 2 foot colas to crop everywere..or two decent sized plant's in 3 gal pot's.. you could even grow 1 great plant in a 3x2 screen and do scrog.. all kind's of option's..
