fan at night?

when I switch to 12/12 should I turn my fan off when the lights go out?

U don't really need em on with the lights are off ...but then agen u can if u want too jus keep an eye out on the temps u don't want more than a 25 degree difference between lights on &| lights off

i always left mine on just for air replacement

thats what i thought...thanks for the help guys.

I leave mine on 24/7 just to keep the air moving. Don't think it hurts, the way I look at it, it gets windy at night too.