What do you do when you have four thermometers in your incubator and they all tell you something different??? Two are digital thermometer/hygrometer that I tested yesterday with the salt in a ziplock (one read 12% low the other 8% low). At the time they were reading the same or one degree different. I've had my incubator going since yesterday noon. One of the digitals stays at 97* (except for an occasional spike to 102*, earlier when I tried turning the thermostat up before I put the other thermometers in, then it would drop back to 97). The other digital is reading 100*. The other two say 98* and 101* I would be happy if even two of them said the same thing!