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Spa manager is supossed to hold the Ph and alk stable according to the dealer. Vinny the TA of the tub on fill was 20 ppm I then added the Baking powder to get it too the 100 ppm and that is when my ph went up.
I just started up a new tub last Friday. Upon starting up the tub I added My di-chlor a product called spa manager and a metal be gone. After the tub came up the TA was 20 and PH was 7.2. I was advised by the dealer to add backing soda to bring the TA up. I added 5 0z of backing soda