Exhaust on timer?

Would you all say that cycling my exhaust would be smarter than to leave it on constantly? If so, do you mind explaining why it would matter?

it might help to keep the humidity up to have it on timer but personally i just leave mine on 24hr

I set mine up on a thermostat so it comes on at 84F. Keeps temps just right.

mustang

I have mine running 24hrs, you want to constantly refresh the air in your grow space so there is a constant supply of fresh co2 enriched air for the plants to photosynthesis, so unless you are supplementing co2 by turning off the exhaust you are suffocating your plants.

nickfury510 said:

I have mine running 24hrs, you want to constantly refresh the air in your grow space so there is a constant supply of fresh co2 enriched air for the plants to photosynthesis, so unless you are supplementing co2 by turning off the exhaust you are suffocating your plants.

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What if I had it on for 15 mins then off for 15? See, I have a big fan that had to be nailed up to the wall behind the room, so some of the hot air in the outside room (2nd floor) is being pulled into the grow room. I'm trying to figure out a way to maintain lower temps because I also have an AC unit now. Maybe ever 15 mins on 30 mins off? Or what if I just left the exhaust on all the time and had the big fan off and on?