Today was the first day I used Fox Farm Tiger Bloom. I'm 99% sure they're all female! The main reasons plants turn hermi is stress and genetics. I have no control over genetics. I have sealed the door pretty damn good to prevent light leaks. I also close the door off from the house during the night hours to further avoid light leaks. The pH is staying right around 6.5. The plants look happy & healthy. Two of them are starting to really develop flowers. I must say, they look really pretty in their pre-flower glory. I'm kinda proud!