the only way to get a female is to buy femi seeds and even then its no garentee.......there are ways to increase your chances of getting a female. and that is by limiting stress factors in its life.
a seed has bothe genetic make of male and females. it is the conditions it is grown in that decide what it is going to be. that is natures way of continuing the species goes own. why do you think you still get a few seeds even when there is no male in your sealed off room of females. its nature
if you limit the stress and create the optium conditions it is mostly you will get a female. i only take 1 male to pollentate endless females. that is why you mostly get females when yu germinate from seed. alot of people may not agree with me but i am sure if you germinate 10 seeds the female to male ratio is going to be very high because you just need 1 male to a entire havest.