I have an in ground pool with a Pebble Tech finish. It holds 10,500 gallons. I am using chlorine tablets in a floater, about 2 a week.
The Chlorine / Bromine test are dead on (Cl 2 ppm / Br 4 ppm) and the pH is 7.5, so far so good.
The problem is the alkalinity. It is constantly coming in at 140 ppm and the recommended range is 80 to 120 ppm. Everything I read says to add muriatic acid to lower the alkalinity. When I do the PH drops and I see no significant change in alkalinity.
I live in the greater Phoenix, AZ area. The local pool supply company says I should live with it because the water here is hard. The anal part of me just won’t let this go. Is there anything I can do short of installing a soft water system? I know it is contributing to the ugly scaling around the pool.
P.S. Any tips on how to remove scaling from Pebble Tech would be appreciated as well.