I wondered why people would use 2 incubators one to start off with and one to hatch. But now that I am on day 20 of my first hatch I wish I had a second incubator that I could have either moved half the eggs into or just bigger so it was not so crowded. Don't get me wrong I love the Brinsea but it is so crowded that I can't see how many have hatched or the eggs that have not hatched. I am thinking if I got a hovabator or made a styrofoam incubator I could use it for hatching. Why do you use a second machine to hatch and what difference has it made in your hatches?