Moved tub to the balcony but it won’t stay cold.
I moved the icebath tub from indoors to the balcony, but strangely, even with more ice, the water temperature never seems to drop below 59°F. This temperature is easily reached indoors. I contacted the seller, who replied that the temperature difference outdoors is greater, causing the icebath tub to heat up significantly faster than indoors. Is this explanation reasonable? If a lower water temperature needs to be maintained outdoors as well, what are some good solutions?