SWG is not making pH go up

[steveinaz]

Steve,

You list that you have a "waterfall" in your pool. By any chance, is that waterfall being run less when you turned on your SWG? The waterfall would do a lot of aeration and cause the pH to rise. Over time, the aeration plus acid additions would cause the TA to drop and there would be less and less pH rise over time, but this would take a long time to accomplish. Was there anything else that changed, including chemical additions, the TA level, or the pH? If you turned on your SWG and found the pH to be more stable, then that is indeed out of the ordinary (based on posts from users) and would be useful to figure out.

Richard

The only time we run the waterfall is when we are swimming, to keep people from stubbing a toe on the floor jets. We haven't done anything else different aside from stopping use of Clorox. Maybe it's just a coincidence of my TA slowly lowering?

My last TA reading (done 2 weeks ago) was 140. Using waterbears formula for correction, that would put my corrected TA at apprx 122. (Given a CYA of 55ppm). Don't know if that helps...

Latest:
FC 7
CC 0
PH 7.6 (maintained thru adding 1 cup muriatic a week)
TA 140
CH 295
CYA 55