it'sd best at 24/0 for the entire vegging process some say. Me? i prefer the 18/6 due to fact that plants do neat things (like produce THC and resins) during dark periods. As far as I know, plants need darkness to grow properly, but this is my first indoor grow, (actually today was the last harvest day! now it's just drying, trimming, and curing) so I am inexperienced w/ different lighting other than 18/6.
/Bump