Can I just quickly recommend doing the salt test on your Hygrometers. No matter what hygrometer you have, cheap or expensive, digital or analog, they are almost always incorrect. With a salt test (putting salt with a bit of water in a bottle cap placed in a zip lock bag with your hygrometer in with it should make the hygrometer read 75% humidity after a few hours) you will know exactly how right or wrong your hygrometer is
I've seen it to many times where people say "my viv is soaking wet but I can't get about 50% humidity" . Everyone should check their hygrometers work as soon as they buy them so they know if their going to be off and by how much.