Last night I pull up to house and everything is pitch black. Power is out, GREAT.... So I'm not too worried about the DT and my nano inside because I had only been gone for about 3 hours but I have QT in the garage and it was COLD when I got home. Thankfully after getting the generator hooked up, the tank was only down to 74. Power was out for about 6 hours total yesterday and I'm happy that I decided to purchase a Generator. Not only for the fish tanks but for the Fridge/freezer and my other freezer in the garage. What would have been a whole of food gone to waste. I know people like to have the latest and greatest gadgets but I would put some money aside and get a generator for these kind of situations.