It's real hard to tell from the pics. I Just started flowering mine last week on thursday. I noticed all of them showing sex by today. And all six are female, got a nigga juiced ya dig! But all of mine are about 5,6 weeks, and one is about 7.8 weeks, and my smaller one is about 4,5 weeks. And it was the last to show sex, today matter of fact. So, I took clones off the four showing sex last night, and the remaining ones, I took clones off of today. I got a total of 10 guaranteed female clones. I would say use the 6 cfl's and the tubes, the more light the better. Handle it my nig.