I been messing around with my tap water. I just added a teaspoon of vinegar (cider vinegar was all I had) to a gallon of water and it turned it about 6.8.
From what I read about PH I am going to keep that jug of water and test it ever few days and see if the water is buffered enough to turn the PH back or if it stays. From there I will have to determine the ratio of acidity from pool acid to cider vinegar and from teaspoons per gallon to gallons per 1000 and I will have a rough idea of what I am doing. I just drank some of the vinegar water and it tastes really good. A bit sweeter than plain tap water. I don't want to bring my water down to neutral but 8.2 or 8.5 might be a reasonable goal.
