I've been checking my chlorine and PH daily and have checked the alkalinity about once a week. So,I get how to keep my chlorine balanced. But, my issue is that my alkalinity has run around 130-140 each time I have tested and my PH wants to stay around 7.9-8.0 . I add muriatic acid and test 24 hours later and it will be down to 7.5 - 7.6. But, the next day it is 7.8 again and then it is 8.0 the day after that. I have pretty much left it alone for days then I add some muriatic acid and lower it but, it just keeps creeping back up. My alkalinity stays between 130-140 through all of this.
Should I be doing something different? Are these numbers acceptable?
Thanks so much!