Saltwater hot tubs are spas ( hot tubs) that use a combination of salt water (IE Arctic Spas uses "dead sea" salts), electrolysis and ozone to purify the water. Just as in the case of salt water...
This could be down to a faulty part like a failed heater, circulation pump or thermostat, or even simply that there is not enough water in the Hot Tub.Taken from the Hot Tubs FAQ at...
Hot tub covers can indeed prevent your hot tub from being damaged. they prevent leaves from falling into your hot tub, which can clog up various pipes and whatnot in your hot tub. Also, anything else...
A hot tub is a small pool of hot water, usually bubbling.
WIKIPEDIA states...
A hot tub is a large home-made or manufactured tub or small pool full of heated water and used for soaking,...