Quitre contrare BobBong,

I have spoken with many growers who use this method who veg 8-12 weeks.

Just as if you were to be in flower stage, and light interupted the sacred 12/12 cycle, that doesn't guarantee anything about sex. At worst, it will delay the flower cycle by 2 weeks.

THus, placing yor veg into flower cycle, for 2 weeks, should let you determine the sex. If male, into the trash.

If female, back in to vegging for another 3-4 weeks for extra growth. I have never heard of this inducing male species, since by the 4th week, the sex has been already determinded.

If this induced males, any interuption in flower cycle would induce males also.

Perhaps not on this board is it a common practice, however, it is common to sex the plant prior to full flower stage elsewhere.

Of course if this concerns you, you could always root a clone, then sex it and find out that way.

Happy growing!