Another secret I found out, which may be specific to my exact conditions, I'm not really sure, I don't really use 12-12. After days scouring the interweb I started using 13-11, got lots of hermies and plants took 21 to 28 days to show sex from germination. I knew there had to be a better way. After more searching I learned that 11:15-12:45 (if I can remember where I found this I will post it) is actually ideal. After switching to this light cycle I got 50 % less hermies from bag seed and good seed and also sex showing around 14 days, no later than 21 days. Then my sweet digital timer failed out on me and now I'm running my back up which only works in 30 minute increments so now I run 11:30 on, 12:30 off with pretty good results.