Yes, both those combined can encourage scale buildup. Some folks will just lower their pH to low range, and keep a negative CSI number and over time slowly it helps it.On to another issue. Could the high CH and PH have caused this white scale look on my plaster? It's not as noticeable whit the water in the pool but very noticeable now. Should I consider an acid wash?
Acid washes remove years from a plaster surface lifespan. Use judiciously if ever.
Maddie