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.
If you replace that shiney metallic stuff with Panda Film you might get even better results.View attachment 3591267 here's a little better shot inside the light chamber. Got seedlings on right up high to keep stretch to minimum, got a little hydro going in the back and the one in front center is just a milk jug cut up for a pot and catch tray.
More like how much do I get lol. It's 12-12 constantly so I cut one down plant 3-4 and keep the rotation going. One plant I got only 4 grams! One I got 7 one I got 12 one I got 10 and one I got 8. Those are all dried weights.
Your saying growing
I've found slightly more dark is working better, 11:30 on, 12:30 off is what I'm running now
Your saying growing 12/12 from seed in your ezperience with a time of 13/11 helps with showing sex and having less hermies?
I'm starting running a 12/12 seed system also and will try it out? Don't they really need a solid 12 hours of sleep minimum?