It doesn't really matter. I personally move the lights off time by 6 hours so my feeding time doesn't move (I grow in pots and feed manually).

So I veg from 8pm to 2pm and flower from 8pm to 8am.
PhatJay Reviewed by PhatJay on . how to end with 12 12 I choose OK so I want to have my lights on from 7:30 to 7:30 as my 12 ,12 what hours would I pick for 18 on- do I cut the 6 hours from the front, back or split the time- I will turn my grow-room on this week for the first time and have no idea what hours to choose in the beginning- help please!! Rating: 5