The Purezone is compatible with hot tubs and spas that use mineral / SmartChlor sanitizer sanitizer systems like the FROG @ease In-Line System and the FROG @ease Floating Floating System.    

During Setup, select spa then select "Chlorinating Granules" as the Chlorine type.

Note:  These systems use minerals and a low amount of SmartChlor chlorine to sanitize the spa. They recommend a low level of Free Chlorine of about 0.5ppm.  After you activate your Purezone device, please contact Purezone Support and request a "Lower FC Target".  We can adjust your FC Free Chlorine Target level lower so that you don't receive Low FC alerts in the Purezone app.