I work long hours everyday and when I come home, the last thing I want to do is make sure a pet is walked, and fed and played with. I just want to come home and relax. I have a pet, if you can call a fish a pet. He swims in his bowl, and he is quite happy when I take a few seconds to feed him every day. He is happy when I take a half hour to clean his bowl, on the weekends, but I don’t have to worry about taking him out for his business, or about worrying about the heating or air conditioning for him. At least I didn’t think I had to worry about the heating for him. I’m not home that often to wonder if it is getting too cold in the house. If it is cold, I’ll turn up the furnace. I didn’t think how those temperature vacillations were affecting my fish. I noticed they were behaving a bit sluggish, but they still seemed to be okay. Then I got home one day and one of the fish was belly up. I took him out and gave him a properly flushing. I then got out the thermometer and I checked the temperature of their tank. It was ten degrees colder than was recommended. I thought I should go out and get a heater for the tank, but I didn’t want to shock them with it getting too warm too quickly. I decided that it may be best to just turn up the thermostat. As the air heated, the fish tank water would also heat. I thought this would be the same as radiant heating, but for the fish.