I wouldn't 12/12 autos from seed. I wouldn't even 12/12 them at all. The best light for them would be 18/6 all the way through. They flower on their own, hence the name autoflower, and will do it regardless of the light cycle. That could be why it's been growing so long, yet it's so short and compact. A lil heads up, before you start your next grow, make sure you get all your info together. Also, are you planning on cloning the Kandy Kush? If I were you, I would. That way you don't have to start from seed next time, and you can continue that strain for as long as you want. My cousin has been growing the same strain from clone for 17 years, and the clone he got to start, came from someone who had been doing the same for about 5-8 years or so. So, it's been going forever. And all from cloning.