So, we built an incubator last night. I'm have problems with huge temperature fluctuations though. It's going up to 113° before the bulb shuts off and dropping to 83.7° before it turns on. The hot water thermostat I bought is a low end one with what's supposed to be a low of 90°. I've built one before but it's been almost 10 years. I'm not sure what's wrong with it. There is a screen that'll go over everything, but it's a pain to remove and replace until I get it regulated.