I'm trying to troubleshoot my rapidly rising pH. I have a little 6500 gallon lap pool with an integrated spa and an infinity edge. The pool was completed in February with a dark Pebblefina finish.
I only run the infinite edge for an hour a day to limit the amount of aeration. We haven't been using the spa. I've gotten my alk down to 90-100 but every day my pH will jump from 7.4 to over 8 overnight. I'm currently adding 6.0-16.0 oz of muriatic acid a day to force the pH down. My hardness is stable around 300.
Is this normal? I know that the plaster will force the alk and pH up while its curing, and the small size of the pool doesn't help.
Unfortunately I'm super sensitive to out of balance pH (drives my skin crazy!) so I'm hoping that I can find a sustainable solution. If it keeps rising this much without using any features, will I need to kee adding acid every time we use the spa or have swimmers? Should I consider an automated solution?