Ever since we purchased our home 3 years ago, I've noticed that my pool requires an insane amount of 31.45% Muriatic Acid to keep the pH in line. I have to add 28oz of acid in my 14K gallon pool every other day to keep pH between 7.4 - 7.6. I know having a salt water generator causes pH to be higher than normal, but this just seems ridiculous. I was at my local pool store the other day buying my monthly case of 4 1-gallon jugs, and the pool owner there told me he would use that amount in 1 year.
Here are my numbers:
FC = 2.5
pH = 7.6
Alk = 75
CH = 475 (I know this is high, but I can't do anything about it right now - in California with water restrictions)
CA = 60
Salt = 3700 (recently discovered my SWG is highly inaccurate)
Temp = 83
Does anyone have any ideas what would cause such a heavy demand for Muriatic Acid and if there is anything that can be done?