well normally between 6 and 8 in a dwc but I built an aero setup that I was planning to use next grow but undecided about doing a sog or doing an aero grow next, have been wanting to do a sog for a long time but hesitating to do a sog because of no experience with it and would hate to have a fucked up grow possibly, times with no weed suck, only thing making me want to do it this time is I'm probably going to get a good yeild this round, plus I also grow at my neighbors place as he wanted a setup, believe it or not I grow better at his place, cant figure that out, we dont fuck with the plants there as much as I do at my place and the yeilds we get off those plants(PPP) are just unreal, I dont know what I'm going to do next grow but whatever it is I really appreciate all the info on this thread