I'm thinking about trying again after two failed hatches and decided to get another thermometer just to cover all of my bases. I was also looking for a water wiggler, but couldn't find one. Anyway, I have the two thermometers side by side and they are reading 2 degrees apart...now how do I know which one to trust? Also, I had the thermometer with the probe attached to the inside wall of the bator on my last two tries and just read not to do that, and that the thermometers should be in the middle? I have a still air incubator, if that matters. I want to attempt to figure out what went wrong before I try again because I really, really want chicks this time! Thanks!