Can I use the Q2 ENERGYspa in a spa bath/hot tub?
No. With the chemicals used in spa baths and hot tubs we do not recommend it. These chemicals are the same as other additives to the water; they degrade the Orb very quickly and are not really beneficial for the user. In addition, the water in spa baths is not changed after every bath so it is not a very good choice for a session with the Q2 ENERGYspa. If your spa tub is a smaller version and the water is emptied each time you use it, you may use the Q2 ENERGYspa in this tub, but again only one person at a time.