Thanks all. I only have the ability to run 1 shift per day. I may be able to purchase a couple of more thumbscrew timing setting though, then I could run it more than 1 setting. I will look into that.

I will be running it tomorrow during the day to see how it works. Got home today and the water was at 84 (+6 degrees), but of course the thermometer was closer to the top of the water so that is off.