Hello Ive been raising road island reds for about 2 years now and find it a fulfilling hobby. We have had very good luck with them laying and now im interested in hatching their eggs. I found some plans for a homemade incubator on google at this site and decided to join up so I could ask for some advise. The only problem Ive had so far is the thermostat. The one Ive got is for a water heater and cuts off when it should but doesnt cut back on until the temp has dropped to about 93 degrees. Is my thermostat just not sensitive enough or is there something else I could be doing wrong. Im useing a styrofoam cooler and 25 watt light bulb as my heat source.