08-25-2011, 02:38 PM
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I'm not as concerned about an over-run - perhaps because I only ever had it happen once in the dark ages when we setup our aquariums in a high school science class. I think a wayward student of a misspent youth cooked my fish!
Another good idea about the dc to ac inverter, especially since I overwinter a couple of 12v marine batteries in the basement. I did a real quick check and it looks like an appropriate inverter can be had for $35 - $50.
(400w continuous/800w peak). I'm thinking if there was an outage, I'd just drive one heater.
I do have a concern though and that has to do with maintaining the temperature as the room temp drops way down. I guess we'd also need to consider wrapping the tank in blankets or what not to insulate it~
There are so very many inverters to choose from.
Let me know what you find.