I personally used the AC Infinity Cloudline T6 and I also have a T4. It comes with a controller and I have it set to:Temp High -> 82FHumidity High -> depends on what stage of growth im in. Sometimes it's set to 55%, sometimes 65%, sometimes 85%Hope that helps.
@LuKe Harding Well everyone's environment will be a bit different so what works for me may not work for you. My fan only comes on when it hits certain temp/humidity set points. I can get away with that because I am supplementing CO2. That being said, I know some growers who just keep it on speed 1 and adjust as needed. Remember, the reason we need air exchange is so the plants have CO2; small seedlings won't need the air exchanged anywhere near as much as large plants filling up the grow space.
I personally used the AC Infinity Cloudline T6 and I also have a T4. It comes with a controller and I have it set to: Temp High -> 82F Humidity High -> depends on what stage of growth im in. Sometimes it's set to 55%, sometimes 65%, sometimes 85% Hope that helps.