My DH and 11 year old grandson decided to build an incubator following your guidelines. My grandson did the work and DH supervised. He did a wonderful job. We took an old ice chest and he went to work. We have had it up and running for two days but we are having trouble. The temperature keeps changing we can not get it to level out. We are using a 25 watt bulb and the thermostat you suggested. My grandson wired the thermostat beside the light builb does that make a difference? Also his vent holes are on 1/4 inches do they need to be bigger. Right now the temp goes off at 101.1 51hum. then doesnt come back on until its 94.5 and the humidity is 61% Does that sound right? The lower the temp goes the higher the humidity goes. We have two bottles of water in there as when we put a shallow pan in it was way to much. We are in Florida so we have alot of humidity. the room temp is 78 as we have the air on. We should be able to turn it off tomorrow as its getting cold again here. Any help you can give would be appreciated. Micki