Does he have enough gas tucked away for the duration?

That's why Mom & Dad went with a propane powered generator. They can last a long while - their supply always bounces between 800 and 1600 gallons on hand at one time. (two 1,000 gallon tanks) Their generator is a auto-on model, enough to power the whole house.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).