The end results are not in yet fish looked rough this morning at least 10 big fish dead. My tanks are very over stocked but I do not have water quality problems I do lots of large water changes. I didn't think the power being out for that long would have such an impact or I would have made other arrangements. I'm guessing either lack of oxygen or the temp drop was almost 60 in the room before the power came back. I'll give another update when I get home and see what else is gone.