Due to being laid off, we need to cut costs to the bone. The hot tub costs a lot to heat and we want to drain it and turn it off. My concern is that this will ruin the hot tub (freezing pipes, etc.) What is the best way to save energy costs while not ruining the hot tub? Is it safe to just dry-store it or would it be better to run water in it at a very low temperature.

Thanks!