Hey bros...
Thanks for all your inputs... I have done some research and found out that for UPS...usually they can only last you for the most is 30 minutes ... someone salesman told me to get a inverter said it can last longer...but never understand how it works... for generator... it might be not practicial to buy one for use in only once a year or once a 3 year.... So I decided to buy four batteries powered air pumps to support 1 5 ft-tank, 1 3 ft-tank, and 1 2f-tank...
You know what? it turned out that yesterday scheduled Powered Breakout Maintenance from SP did not happen....
Anyway, it a good info and exprience to know what to get the stuff and expect....thanks again..