this is really weird, but after doing the AA treatment last night, my PH is at 7.5. it only dropped .1 from 7.6 the day before the AA treatment. i followed the instructions and most of my stains are gone.
i used Jack's Magic Purple stuff plus and USB grade AA (2lbs used).
I am going to add some muriatic now to bring my PH down a little bit more. tomorrow i will start my swg again at 20% to start adding some chlorine to the pool