I just set up my hatchling enclosure (15 qt tub) with a UTH, thermostat, and vivarium electronics thermometer/hygrometer. The reading for the ambient temperature of the room (72 F) is accurate, but the humidity is reading at 53%, which seems unusually high for an empty tub. The humidity outside is 39%, but I have a lot of aquariums... could that be the cause of such a large increase? Has anyone experienced an inaccurate reading with this hygrometer? I want to be sure I have the right parameters before I bring my baby home.