Right...I keep forgetting you live in the cold area of the country! I am going to order one of those temp guns in a couple of days...then I am going to see what my temps really are. I have heard that you can see how "off" digital thermometer readings can be once you get an infrared temp gun. I do have thermostats though on two of my tanks. I need to buy two more as soon as I get the money. I have them set to shut things off if temps go over 88.