Im new to incubating chicks but today is day 21 and one of the eggs had hatched. I have 2 other eggs that are have a small sign of hatching but nothing on the others. i have 11 eggs in the incubator 2 of which i believe are no good. How long should i wait for the other 9 and what do i do with the chick that is alread hatched. also my incubator humidity climbed to 75, what is the safe range for the rest of the hatching?