Quick question about power outage possibility

[Eveready]

We have a major winter storm bearing down on us.
I am wondering, if the power goes out how long will my fish survive /
I have a 20 gallon tall tank with 2 2" angels and 2 1 1/2" cribs and 1 2" pleco.
Any way to make them last longer, just in case ?

 

[12 Volt Man]

power outages of a few hours are no problem.

its the ones that are 8+ hours that are an issue.

best thing is to get a battery operated air pump from your LFS.