bro, why would you even consider growing with regular lights...... thing is, if its to save money from buying lights i dont think ur gonna be able to afford all the other necessities ie. nutes and ph up & down and the list goes on, and if thats not why you asked i mean... if u want really crappy bud that is really spacey you'd be lucky to get that, if it even pops up. spend some time reading because im a noob and let me tell you, i could find out whether thats a good idea or not in a matter of 5 seconds in these forums. I would not suggest attempting to even grow until you get SOME info under ur belt. Im not expert trust me but before you ask a question like that look it up, cause some people really get mad about questions that are blatantly obvious. Not trying to be a debby-downer just looking out, the more $ you put into your setup and nutes, generally the more impressive the result, except what unbridledcannabis said, hes dead on. if u dont have money to buy a mh & hps setup use a cfl otherwise might as well go find some ditch weed down there and pluck that up.