I got a notice from my electric company last week. Sept 10 power will be shut off for repairs from 7:00AM to 3:00PM. That is 8 hours! last time we had a power outage a couple years ago for 5hr I lost a lot of nice fish from my big tank. After that incident I went and purchased a used Generac 5500 watt generator. So now i'm ready!! I did a test run the other day. Powered my refrigerator and all 4 of my tanks pumps and filters. I might even power my neighbors frige if he wants, I'm ready this time!