My incubator arrived this morning - I came home, plugged it in, filled the chamber with water and it is ready for eggs. I will wait until it has remained steady for 24 hours before putting the eggs in though. It didn't take but maybe 30 mins for the temperature and humidity to get where it needed. I have 19 eggs that will go in (Maybe 20 if I get another egg this evening or in the morning.) These are just barnyard mixes - nothing special.