Had to have had 1 somewhere. The only thing that I think may have happened was that when you sexed them, I'm assuming you did. Then you left the male or males that were there long enough to pollenate the females.This would have happened if you went straight to flowering when you found out the sexes. Shaking that male in the room with fans and such did just what nature would have done when the wind blew.

Ga Grown!