[kathy and al]

I have a hot tub and have been told by professionals not to leave the tub empty. They are very emphatic about this due to the fact that an empty tub is vulnerable to the earth/soil and atomospheric pressures and could cause severe damage to the hot tub. I too have had extended periods of non use and the best thing to do is just cover it and when you return just drain and clean the tub and add new chemicals.