Hello! First post here! Well I'm finally in place to be able to have a small backyard flock after not having my own chickens for several years. I've raised from chicks in the past but I got it into my head that this time I wanted to try my hand at hatching my own eggs. Long story short I also decided to make my own incubator as well. I started with a styrofoam cooler heated from the bottom by a reptile heat mat and from the top by a low wattage light bulb both regulated by a horticultural thermostat controller with an analog temp/hygrometer inside the bator to monitor humidity. It seems to keep everything at an even temperature.