sounds like you have a lot of questions needed answered,,,, first of all it takes exactly 3 weeks to hatch a baby chick,,, and the temperature needs to be 99.5 degrees for the ideal hatch,,,, most of us don't get those results with any incubator, and i said (MOST),,,, usually don't,,, you should try to at least keep the temp at 99, to 100 and most people will tell you to keep your humidity at 40-50% (DONT DO THAT) you dont get good hatch results that way,,, what you wanna do is keep your humidity at 20% the first 18 days,,, and after the 18 days is over,,, then you stop turning the eggs, and let them sit, in the incubator,,, then you add water to it on day 18 and keep water in it.... bring your humidity up to 60% the last three days of incubation,,,, this is called LOCKDOWN,,, and you dont open the incubator at this time,,,, you can if you need to add water REALLY fast,,, then close the lid,,,, and on day 21 dont open the lid for anything,,, by day 21 you should have had enough time to do these thing such as add water, and on day 21 you watch and wait,,, and a word of advise is that you add WARM water to your incubator for humidity