New grower here, I was wondering about ventilation. I have a 1000 cubic foot flower space and I’m looking at getting an exhaust fan. Do I need to get another fan as an intake fan, or will my floor vent suffice?
no intake fan required. if a intake fan is required then the exhaust fan is to small. will say your space is 12/12 by 8 height . you did not say if these fans are also cooling the room. you will require 2 of these if your trying to cool as well. 8 In. Portable Ventilator run ducts to it make put them high as possible . they will work perfect. if you need tips how to connect these and how to ensure fresh clean air intake just ask
My home thermostat is currently what I have cooling the room, I have oscillating fans as well. I just didn’t know if my exhaust fan runs at 740 CFM, if I needed an intake fan running at the same to forcefully replace the air.
When I’m calculating my CFM, should I go for a complete air exchange every minute or every three minutes, because I’ve heard both.
With no internal circulation, I would shoot for every minute. You said you are running circulating fans in there, so 3 would be fine as well. 740 in a 1000 is decent numbers. I wouldn't bother with an intake, just a breeze on the plants.
no intake fan will be required if your exhaust fan is strong enough . and if you do not have many air leaks .