Does temperature kill bacteria?

[Nia]

There was a blackout in my neighborhood last night and I'm scared it could've killed the bacteria in my tank. Yesterday before the blackout I had about 1ppm of ammonia and I checked again when the power came back on and it was completely gone.

[face]

no temperature won't kill your bacteria the same bacteria live outside and survive just fine lack of oxygen and food can be a problem but if your ammonia disappeared overnight you should be fine.