Also you can check on Homedepot the Ryobi 2200 watts generator. Is around $599 and will power your tank, tv, refrigerator, and other items at the same time. I know because I power all of that during a power outage and still the generator was showing only 60% utilization of capacity. My tank is a reefer 425 XL with three radions, two MP40, heater and apex controller and everything was running fine. You should be good with any inverted generator from 1000 watts to 2000 watts, also this kind of generator will run a couple of hours with just only two gallons of gasoline.