keeping fans on when the lights are off?

should i keep my inline fans and carbon filter running when the lights are off?

Yeah, you need to continue to circulate air throughout the room/box. Make sure you check the temperatures the first few nights just in case the temp drops too far down.

If your plants smell ,yeh leave the exaust carbon filter on.I keep a lil fan on,and set my inline fan to turn on every hour for 15min. when lights off.

yeah, just remember, the longer the intake fan is on with the lights off the faster the temperature inside the growbox/room with equalize to the outside room.