live in jersey it's frozen here! been 3 months on this water thus far.. use only Dichlor every day, MPS once a week and run an N2 cartrige too. 375 gallons, Sundance Altamar spa with ozonator. Spa is in my two car garage.
it seems lately that my Alk was high, so I lowered with PH decreaser. Alk is now around 100 ppm, but PH is low around 6.5. Just added 3 tablespoons of PH increaser this morning. Hopefully that will raise the PH into the 7.2 range but then my Alk is probably going to go way up into the 170ppm range again. I can't seem to keep the Alk low and get the PH higher without affecting both!