Mmmm I've setup commercial CO2 grows with intake/outtake. Really depends on the grower more than anything. With a high temp shut off you still leave a few lights on and they need air flow. Double duty as the night exchange.
Having a rich organic soil will reduce your usage too, the more volume the better re: beds. I think it was Lapides? Or someone here who recorded 500+ ppm from the soil organisms alone.
I am not sure on the damper. Some are meant to swing open with very little pressure (doors opening).
Having a rich organic soil will reduce your usage too, the more volume the better re: beds. I think it was Lapides? Or someone here who recorded 500+ ppm from the soil organisms alone.
I am not sure on the damper. Some are meant to swing open with very little pressure (doors opening).