do i have to calabrate it right away?! i thought they where good to go right when you turned them on?! oh no! i was about to set my eggs!
The humidity level is used to control the rate of evaporation in the eggs, so I don't think it's critical right now. I always calibrate mine because sometimes they are inaccurate, for instance, the one I am using is off by 9%, but it's a cheap model. If you have something better then yours might be good to go. It can be calibrated overnight though, and I don't think it would harm your eggs to have them in the incubator overnight while you check the accuracy of your hydrometer.
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I was so upset. I was a first timer when I did it, so I'm a first timer again because I lost all of the eggs. I"m hoping for a good hatch this time. 
