I have 5 freshwater tanks (200, 110, 40, 15, 10), my question is how should I pepare so I don't lose any of the occupants? I was thinking of doing water changes on all the tanks about an hour or 2 after the power is out, and possibly not feeding for a day prior to cut down on pollutants. Any advice that someone could render would be of great help... Also will all my benficial bacteria die in that period of time? Should I keep it submereged?