So yesterday my power went out for 6 hours yesterday while i was at work. So I had my wife hook up the generator and all is well.... so i thought. right when it was feeding my QT tank with my 2 inch jag and 4 inch severum i noticed it was warm. I checked the temp and it was 100 degrees!!! fish were still alive and healthy, so i swapped heaters and as of this morning all is well.