Low PH problem

[john1261]

Long time pool owner with a new problem that I have never faced before.

I have added almost 50 lbs of Soda Ash to the pool this season trying to get the PH up to 7.2. Nothing seems to work. In the past 30 years I have always fought high PH and added acid to bring it and the total alkalinity down.

My daughters pool (vinyl) has had the same problem although my neighbor's (fiberglass wall cement bottom) pool has not.

Central Indiana has had an exceptionally hot dry summer like a lot of the country. With the low PH my daughter and I have been going through chlorine like mad. My pool has remained clear while her's is cloudy, white cloudy not green cloudy.

Any suggestions to get the PH in line before we start to close the pool in about 3 weeks?