Quote Originally Posted by TanyaL View Post

I don't have a way to check that my accurite is measuring the humidity correctly but I did verify the temps with a heat gun. So, I'm assuming that the accurite is working properly.

I went through this issue with a fella in our local herp club. What he found is that the Accurite's hydrometer sensor is on the BACK of the unit, at the bottom. When you are using something that allows for a flat bottom (newspaper, etc) it registers just fine.

If you use a particulate substrate, it's possible that the sensor hole can get blocked and cause a false reading. I'd check to make sure that nothing is blocking the hole and that you're getting a normal reading from it. Maybe place the unit on top of your hide box on the side it is now and see what it measures.