I have a incubator made from a cooler. It seems to work ok, not great but, that is another thing. My question is what is the idea behind a hatcher? I have eggs from dif. people coming at dif. times so I want a place to put the hatching eggs into for there last few days of incubation. What I read is that they need more humidity towards the hatch period. I went to find a cooler at the goodwill and such to no avail. So I thought how about an old fish tank with a insulating cover. Any help? I have got a shell around the tank going on. I want it to have a drawer(the opening of tank in the front not top) to open to access eggs or better yet chicks. I think at the bottom rather then the top will hold both temp. and Hum. Should my hatching unit have fanforced air or still? Any ideas welcome and thank you for your input!