Hi, I recently bought a house with a 26000 gal. IG plaster pool, sand filter. I converted it to salt water. Everything is good except the ph is constantly high, around 8.0. I add muriatic acid to bring it to 7.6 but in less than a week it is high again. I have gone through 4 gallons of acid thusfar this summer. The pump runs 24/7.
Free Cl 2.5
total Cl 2.5
CYA 56 (I am adding some now)
Can I do something to lessen the acid demand?