So I had the best of intentions to add borates this summer (7 boxes of 20 mule team in my garage), but I am struggling to decrease my TA to reasonable levels. My TA has consistently been hanging around the 200ppm range. I have been constantly aerating with my return jet, letting my pH climb to the 7.8-8.0 range and then knocking it back down to 7.0-7.2 range with muriatic acid. Unfortunately, a few bottles of muriatic acid later, I don't seem to be making much headway.
It had been raining a significant amount a couple weeks ago, but I figured that would only help since rains pH is around 5.
Anyway, if anyone has any further suggestions, I would appreciate it. With a vinyl pool, what should be my goal TA before adding borax? Thanks!