if your on a 24hour veg cycle, your pretty much not gonna see any "sexing" unless you switch the light regiment to 12on/12off (unless its an auto-flower strain EX: lowrider) tho i've seen strains "sex" under 18on/6off light cycle.,
goodluck
there is no "legal grower", state=ok / federal=no . As long as you obey the requirements under Sb420--H&S code--Comp Act'96.. then again, its still a 50/50 thing that makes no sense.