Hey Tom, just dealt with the same thing. We lost power for 32 hours and my 3 tanks had zero issues at all for that period of time with no filters etc. Ill bet they could have gone another 32 at least. They were acting completely normal and wanting to be fed etc.
To aerate same as a bubble wand etc:
remove all the lids so that as much oxygen exchange can take place as possible.
Take as big a pitcher as you can (or cup etc for small tanks) fill it with the tank water and hold it as high above the tank as you can and pour it back in. this will oxygenate it as good if not better than bubblers. repeat it as often as you think its needed. Thats the best manual way to do it that Ive found.
My tank temps got down to 73 and Im seeing no residual affects as of yet...and dont really expect to. It was a very gradual temp change and they still arent up to 82 where I keep them.
Personally, I wouldnt feed anyone anything at all so that the levels stay as close to the same as possible.
I know it feels sketchy but I think theyll do ok for a few days if, and Im sure you have, you have done regular water changes on a regular basis and hold back on feeding.
Good Luck!
