Hi all. I'm new to posting, so bear with me! I have a 22000 gal pebble-tec pool. The water temp is 90 and getting lots of Phoenix summer sun.

Here are my numbers from this morning.
ph- 7.6 fc- 3.5 ta- 50 ch- 725 cya-45

I'm having to add a gallon of muriatic acid and a gallon of 10% sodium hypochlorite chlorinating liquid every 4-5 days, sometimes even after 3 days.

Would raising my cya stabilize the ph so I don't have to add the chlorine so often. Also, it seems that my adding so much acid lowers my ta, but when I raise the ta, my ph shoots up.

And lastly, the water in Phoenix is very hard, but is such a high ch acceptable?

Thanks