Hi

So I just heard that my area is having a planned power cut for a few hours tonight.
It is winter here, but it does not get as cold as some places. Looking at a room temperature of about 16C (60F)

Any ideas as to how to keep my cage as warm as possible without any electricity?
I currently have the space heater on in my room to keep the ambient temperature as warm as possible which I will keep on until the power cuts out.

I also plan to heat up a few hot water bottles just before the scheduled cut and place it under the tanks. (I have the melamine tanks with glass sliding doors)

Any ideas will be greatly appreciated

Thanks