i usually will notice a male by five to seven days if they've had at least six weeks to veg. longer than eight days, i usually go with it's a girl. keep an eye on it to be sure and to learn how it looks for next time, but with your males already showing, and she hasn't really, that's a good sign for at least one. your male looked pretty healthy too, so overall good grow so far. can't control the female/male ratio.