I have a 250 gallon Catalina Spa hot tub. I have a problem keeping my ph in check, seems to go over 8.2 over night. Trying to keep it at 7.5. with dry acid.
My alkalinity is at 80 ppm, calcium hardness is 230ppm. Only use diclor for sanatizer and shock. Only turn aerators and pump on when in hot tub for 15 minutes. Is giving up the fight for lower ph worth it or leaving it high going to be harmful to my equipment? Water temp is kept at 100 to 102 degrees.