DougA 0 Posted Tuesday at 08:02 PM Report Share Posted Tuesday at 08:02 PM I installed a SmarterSpa SWG on my 400 G. hot tub. The Smarter Spa lets you control the max free chorine by adjusting how long it runs (power) AND the minimum free chlorine by adjusting the sensor for when it turns on (zero point). What max and min free chlorine would you shoot for as I adjust it? If you have a smarter spa, any guess what would be a good "power" and "zero" setting point for a 400G tub? In talking to a technical service person at SmarterSpa, he said the SmarterSpa will not run for a minimum of 3 hours after running. Does this seem accurate in your experience. My tub is most often used by 1 person for 15-30 minutes about 7-10 times per week. It is used by two people for 15-30 minutes one or two times a week. Occasionally it's used by more people. I have used liquid chlorine so I would be willing to supplement occasionally with liquid chlorine and/or add MPS occasionally. My numbers.....CYA=25, borates=50 ppm, TA=60, Ph=8.6, Nature2, SmarterSpa, Calcium Hardness=240 Quote Link to post Share on other sites
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