I have two temp and humidity instruments. They say different humidity. Temps are very close and I have other things to see temps on so I am not as worried about that as I am humidity. I am calibrating them with salt slurry right now but my question is.........if the humidity in the house is too high and I can't get it down what am I going to do. We get rain in the evenings here this time of year so humidity goes up. The only time it is really dry is in the winter. I have a Genesis 1588. I have an older turner that fits it and have hatched before with it several years ago. I am not really good at it but I try. I just don't what them to drown when they pip. My chickens are old and I need replacements. They are not good broodies so I need to do it or buy them and I do love doing it when it works good. ;]