Info on ventilation

A question from a fellow grower:

Hey Robert,i am growing a month now and its go’s verry good.But would like some info on ventilation.Do i leave ventilation on when the lights are off?Exhaust gives automatic themp control do thats not the problem… The question is what do i do with inlegt and small fan’s in the night time??

Leaving fans on at night helps keep humidity low because air is steadily moving, with fans off air is still and let’s humidity get time to imcrease, id honestly keep them on at night

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