Last year I used a hovabator to hatch out eggs with very little problems. My son and I only have a few clutches to deal with this year and last year (hopefully more for years to come). Anyway at the very least I will need to replace the waffle in it this year (so I have heard), but I have also heard that a hovabator can be operated on a thermostat. How? and what do I need to do toe convert it from the norm?