thank you guys, I'm more of planting feminized, and as I don't have a big space I wanted to plant 3 cars and 3 feminized, I'm already going to do a lot of cars to see how it goes, if I like it in the future, do what I mentioned above,
Normaly auto's don't depend of photoperiod but pts recommanded to put it on 18h "day" 6h "night", maybe 20h "day" but i think 12h IS a bit low. Hope i helped you. Have a nice grow ;)
Yes, it's perfectly fine, I do it all the time especially when they act like they don't want to flower, so from someone who grows nothing but autos, so again you'll be perfectly fine.
I had an auto that wouldn't flower correctly the one time I did auto. had to switch to 12/12 to get it to flower. idk bout yu but if yu need to then ok if not I wouldn't from what others say. the more light the more growth with autos I guess.