Exhaust/intake fan off during "night" cycle?

Do you turn the venting system off when lights go off in the grow room?

I suggest not to. I run mine 24/7. Now if you wanna save some coin I could understand but why would you want to turn your ventilation off during lights out?

Plants don't stop needing air at night keep that shit running

I keep mine running to maintain negative air pressure and prevent the smell from escaping the tent.

depending on how many plants this can create a humidity problem. the plants transpire in the dark giving off moisture which raises the rh if you dont have that many plants or if they are small it will be fine but i would not advise this in the long run.

Thanks guys...I have always ran my vents 24/7...just doing some reading and noticed someone turned theirs off at night.

you wouldn't want someone to put a bag over your head at night, why would the plants want to feel that way too?

i do shut mine down 15 minutes after the light goes out and 30 minutes after light comes on, my vent turns back on.

for me, if i didnt shut down the fan with lights out. id lose 20ish *temp this time of year, and go from a on range of 78 to an off range of 58. also when my light comes on in the am, the room Warms up for 30 minutes (simulating the raising heat with raising sun) and then turns on to maintain a somewhat steady temp of about 78. dark time the room is about 65 at the low end with vent fan off. as humidity goes up, i ll run an in room fan for air cirulation, but my venting is for heat/cool control only. other fans will take care of simulated wind.