I'm in VA and my power went out yesterday during our mini blizzard at noon while I was at work outside temps low 30's dipping into the 20's. There was nothing I could do but see how everything was once I got home and plug in my inverter. Luckily as I got home, the power came back on. The tank(13.5 Evo) had nothing for 8 hours, the temp dropped to 68 from 79 (house temp got to 62). Clowns were doing good, most coral was retracted, BTA was half in and I did not see my YWG and pistol. Let the temp come back up normally. Today everything is doing good, YWG and pistol are doing their thing too. I'm not sure how much lower the temp could have gone but was glad I had a plan, even though I couldn't get home quick. Was happier the power came back when it did.