UPS? Power shut off

[Reef-Geek]

Hi, all

My apartment will have a 8 hours(high chance it will be shorter than that) power shut off from 11pm-7am and I need you advice.

I have a 34 gallon mixed reef tank, water volume is about 25-27 gallon.
What should I do when power is cut off?

1.I can turn the room heater on 25C before the power shut off, and use blankets to wrap the tank. Will that be efficient to keep the temperature not dropping too fast for 8 hours?

2.The cheap APC UPS can only hold 50w device for 16mins, so obvious I cannot connect it to me 100w heater. Should I get one for the pumps(mp10)? Is it essential? Does any one of you have a ups?

3.any more advices? suggestions?