Question regarding humidity

55 daytime is ok, it's night you have to be careful about, 55 day with a temp drop of 10 degree F could see rh skyrocket to upward of 65%, which is possible problem if left unchecked. Have fan come on (high) once humidity reaches 50 set it to 5% difference. Moisture in the air is extracted, the tent should look concave when pushing air out. The only intake should be smaller than the cfm out (always on) and as close to the floor as possible, this creates a negative presuure within the tent forcing humid air out and slighlty less humid air from a lower point in. The humidity will always be 20-30-40% higher at top of any room as opposed to bottom, same way that co2 sits on bottom 1"2" of lowest point in any room. It can be quite a task to maintain but works well. Just be aware you will also vent Any co2 that accumulates overnight. But in a closed loop all the co2 eventually makes it back in from bottom of floor.