For anyone interested in saving a few bucks on a dual stage Ranco Dual Stage temp controller and is willing to do the wiring for it....https://www.agrisales-inc.com/ranco-etc-241000-000-digital-temperature-control-thermostat. $88.50 plus approx $10 for shipping. You will have to purchase the parts for the wiring...another $15-$20...pretty straight forward and easy to do. As far as I can tell, it's the exact same unit as the Aqua Logic. You will have to seal up the temp probe...I just used plasti-dip. Here's a pic of my completed unit.