Josh's+Guide+to+Incubating+Eggs

  By the time you have gotten your eggs your incubator should have been running at least 24 hours. A week is even better. This gives you time to learn what's going to happen in your incubator and allows you to make any necessary adjustments before setting your eggs. A sure-fire way to ruin hatching eggs is to put them in the incubator without having it properly adjusted. If the eggs reach an internal temperature of 105 degrees you can kiss them good-bye. Take note that I said "internal" temperature. Don't confuse internal egg temperature with internal incubator temperature. The temperature in an incubator changes constantly, rising and lowering. The temperature inside the egg will be an average of this temperature swing in your bator.

Still-air incubator (no fan): 101.5 degrees measured at the TOP of the eggs. Fan Forced incubator: 99.5 degrees measured anywhere in the incubator. Humidity :  60-65% for the first 18 days, 80-85% for the last 3 days.

60% humidity reads about 87 degrees on a wet-bulb at 99.5 degrees. 60% humidity reads about 89 degrees on a wet-bulb at 101.5 degrees. 80% humidity reads about 93 degrees on a wet-bulb at 99.5 degrees.  80% humidity reads about 95 degrees on a wet-bulb at 101.5 degrees.