I set 42 eggs three+ weeks ago. Only 10 of them hatched, and out of the 10 I have only 5 left. And two of those will be dead by tonight. I don't know what happened. I kept the incubator on 99.5 degrees, kept water in it, had an automatic turner, took the turner out at the last three days, kept a heat lamp on them, food and water for them............what did I do wrong?? Do I need to worry about tainted eggs? or disease? bacteria?