I'm on my first batch with one, and the temps have held steady through the last 17 days. Lockdown tomorrow, I've been running it dry (in a humid climate) with good air cell development so far with 23 eggs developing on schedule. Going to add some water tomorrow and keep my fingers crossed until I see hatching! Advice so far - put some electrical tape or something over the built in gauge as it is totally off (4 degrees low reading in my unit) and rely on your secondary thermometers. Run it dry until you need to add water, I had a drop of moisture fail to evaporate for over 4 days in there! Run it for 3-4 days after setting up new thermometers and before setting eggs, extremely small adjustments to the knob make huge temp fluctuations, so keep an eye on it until it's totally steady for a few days with both plugs out at 95.5. I'll be posting my resultant hatch at Amy's hands on hatching thread if you want more updates Best wishes!