A couple of months ago a car took out a telephone pole in front of my house,...after talking to the clean up crew they informed me that it would be 8-10 hours before power would be restored ,...I knew that was a long time to expect things to survive,...so I had to make the decision to drive up to home depot ASAP and purchase a generator with enough power to run the whole tank,...a truly wise move on my part,....you just never know when a accident of routine maintenance could destroy thousands of dollars you have invested,... I firmly believe that anyone who owns a large tank should be prepared just in case.... I am truly sorry for you losing some livestock,...maybe a lesson learned......on the bright side for me,..the insurance covered them cost of my new generator.