I looking into purchasing a UPS Battery Back up for my new 20 gallon rimless mini reef. Im planning on stocking the tank with some expensive and hard to find corals and want to have some extra peace of mind in case of a power failure. I basically want to keep a VorTech MP10, small return pump, and small 25 to 50 watt emergency heater running off the UPS. When the power does go out in my neighborhood, it's usually only for a few hours at most. If anyone is running a UPS, What brand and how big? (volt amp / wattage). What are you running off of it? Also, any good websites that sell them cheaper than chain stores like Best Buy, Radio Shack ect. ? Thanks!