all depends on how much room you got to grow ..about 8-12 inches is when i go 12/12 ..but thats the room i have..this went 12/12 @ 8"'s..currently @ 18-22" tall
congrats man iv had my seedlings up for about 4 days about 2 inches tall and this post was a huge help i didnt know i should be running almost 24 hours of light my plants started to falling(lazy fuckers) i had them runing on 18/6 just switched my timer lol
I've seen a whole lot worse. I used bushmaster on my current grow it it kept them smaller and bushy. I am growing sativas and only have about 48" of space to deal with.