Come January, the BD present I've chosen is a s/w fish setup in our new home/neighborhood. I see the Nano series comes highly recommended. My question: Is there such a thing as a generator for aquariums? If not, what's an approx timespan (winter/summer) before s/w fish expire, should you experience a power outage? Probaby best to look into an ins rider ...and imagine the timespan & outage frequency will factor into the premium.