Alkalinity is between 280 and 300. I was going to try adding the muriatic acid/ aeration trick (homemade pvc aerator) but it doesnt seem to be working. My PH is always at the high end of the test kit even though I have not aerated in about a week- 7.8 to 8.0 or more. I added 190oz of muriatic acid per pool calc and it had virtually no effect on the test. 2 days ago I added another 190 oz and it may have brought it down to about 7.8. Since my test kit only goes up to 8 the ph could have been much higher I guess- hard to say. Anyway, should I just keep at it?
testing over the last week or so
PH 7.8 or higher
TA 280 to 300
CYA finally up to about 40 from the 20s. I added a bunch so I will see where it is in a few days.
Salt level 3950- seems to be doing the trick but I might add another 50 pounds or so to bring it 4200.
Thanks for any advice.