The power in our town was out for an hour today. I noticed because my tank was silent when I walked in the room. No worries though because the filters are always submerged and the bacteria will be fine. For the longest time I wondered why people said not to just unplug filters or turn them off. Then when I joined here I realized that it is because the media would be exposed. Just had to smile today knowing that the only thing I had to worry about was the ice cream melting in the freezer.