Originally Posted by htismaqe
The temp shouldn't drop much at all over the first few hours since there's no circulation or surface agitation. My 55G could go without heat for 12-14 hours and only drop a few degrees. That being said, the area of the house where they are isn't gonna drop much below 68 given its proximity to the fireplace.
I've considered getting battery-powered air pumps but they've been out of stock everywhere and I haven't gotten around to ordering them online.
Other than that, I don't really know what else to do.
And if you don't have a lot of plants, temperature would probably be a bigger problem for you anyway.
The temp in my 55g was dropping a few degrees every hour before I added the candle. Of course, it's located against an exterior wall, (sort of, our garage is on the other side of the wall). My other 2 tanks are small and the temps didn't fluctuate too much.
I would probably look into getting battery-powered air pumps, but I plan on selling the tanks soon.
We have a fireplace, but it's electric. A lot of good that does when you lose power, huh?