I use an Accu-rite to monitor the temps and humidity in a 15 qt tub. Last week I noticed that my ball python was in blue so increased the humidity to around 68%to 70%, however he still had a bad shed. I was curious on why this happened so I bought a flukers digital thermo/hygro, and placed it beside the accurite. To my surprise there was a 10% difference in humidity reading. So my question is, which one should I believe?