I have a little gauge we bought @ the pet store in the reptile section. I think if we fill the water tray full it only last about 3 days. When I hatched in the Eco I put a wet washcloth or sponge on the bottom & it would keep the humidity well. Only time I ever had to adjust the temp on the Eco is when I took it to school for the class to use. Think the air was blowing on it & made the temp fluctuate. If you order the incubator you are going to use to learn to part with some chicks! But if you set them & know you are hatching for a certain person or to only keep a certain color it makes it easier!
You will love the Eco!
My hubby is telling me the same thing.....
