MY FIRST GROW

ok, so i finally decided to grow.. i got some seeds from a friend. I started to germinate 5 of them and four of them have already started to sprout.

i know i need to keep the males away from females, but at what stage can i determine sex?

also, how long does the seed need to sprout while in a glass of water b4 i can plant it?

U can tell the sex once it either gets a lot of "white hairs" (pistils) or "balls" if u look around at pictures youll begin to recognize the difference.