if you r talking bout an exhaust fan mine goes off when the lights do but i always keep a circulating fan on. outside air movement never stops, so just think about trying to replicate a perfect outside environment. good luck
srhksr Reviewed by srhksr on . Ventilation Question Well i grow in a 3 wall room with a curtain and use fans continuously during the light cycle...i then turn them off with the lights because i've given the curtain about 8 inches of open space on both the top and bottom....temp drops between 7-8 deg F...is that alright or should i leave one of my fans on during the night for a little extra air movement...thanks Rating: 5