I would do 24 7.
I taught me buddy some tricks his first grow was an auto.
He didn't have a timer so he just left his light on the whole time.
He had like 3.5 oz
.. test it ;) ice arena. Fee videos I would watch and proved cannabis did best without any sleep or rest just light on 24 7 . If its a smaller auto I would def try 24 7 light. But remember your light may not last for the long run doing so . Good luck growmie
Hey buddy the secret to autos is itleast 20 hr veg and j have seenepic super results by 24 7 light never turned off.
I've personally did 20 hr veg them put them outside or stayed 20 hrs vegging and seen like a qp a plant or more.
The more light the better with an auto for everything .
Depending on the genetics and size.
If its XXL auto il top it and tie down both tops once they grow !! Best of luck hope that helps
I’m just going to add since you have so many responses, that if those are auto flowers I would get them in the final pots asap. Transplanting autos cause be tricky, they have a hard time with the shock.
But keep lights on until you see leaves. Then go with lighting schedule I recommended right when you see green leaves. Remember to help seedlings out getting seed hulls & membrane off plant.
On auto seedlings, I do 12/12 to start with, 3 days later 15/9, then 18/6. This allows the plant to slowly adjust to light insensity instead of being stressed out from to much light. Seedlings are sensitive. But it's better to give the plants 6 hours of rest but a minimum on 20/4. Plants on over 20 hours of light seem to have problems later. I've grew AK-47 & too much light early always caused problems early. Increasing light slowly will let you know what's more comfortable with the plant & keep stress down to reduce plants with stunted growth. Good luck
@420Master,
Thanks for all your help. I will give your lighting schedule a try. Should I keep the lights at 50% for this schedule? Maybe increase it to 75% a few weeks in.