power ended up just kicking back on, so it was out for 5hrs. I ended up using the gas stovetop to heat up tank water to keep my temp from falling too low.
lowest it hit was 76 (then I bumped it back to 79, and it was back to 76 when the power kicked on).... over the 5hrs, but i won't know how everything fared untill the lights come on later today.