i had 4 big devil auto flowers i was growing them under a cfl light they started to produce buds pretty big ones but ware over the recomended time for flowering them
i put them in my 12/12 hps room and in 2 weeks they doubled and ware ready
i have read a hell of a lot about diffrent ways to grow them keep them on 17 hour under your 300 grow light ect but from what i seen
when i switched it to 12 /12 under 600 grow light it made a massive diffrence
personaly i would not grow an auto flower again . and if i did as soon as i saw it was matured coming to the stage of flowering i would put it stright under my hps light under 12/12
any other way might work for some peole