What is the temprature for an old brinsea hatchmaker for incubation? The incubation temperature is the same for hens eggs at 37.7 centigrade or 100 farenheit the incubator model really does not matter. When to put water in the rings? Ok this is harder, it really depends on your enviroment so i would suggest getting a hygrometer as you should run about 40% - 45% for the first 19 days and 60% - 65% for the last 2 days. Should I turn the eggs once a day? To be honest no you should turn a minimum of 3 times a day ideally 5 or more. For this model place a X on one side of the egg and a O on the other side so you know you have turned all eggs each time. Hope this helps Clare