The pool in question is a Senior Citizens Indoor Heated Salt Water Pool. 20,000 gallons.

I use a box of 20 mule team borax to help lower my Total Alkalinity. It worked very well. However, a week later, one of the lifeguards thought they had a low PH and another box of borax.
We started to see some sudsing (for the want of a better term). This occurs about 1.5-2 hours after people are out of the pool. Agitation makes it go back into solution. I did a Saturation index on the water and it checks out good.
I skimmed off some of the suds and did a PH on it and it was about 8. One pool supply suggested adding dry acid, which I did. Our PH is usually about 7.6 on a daily basis. I also added some enzymes to help with the combined chlorine which has climbed from 0.4 to 0.8
Sometimes the pool surface is milky which eventually disappears and becomes a little flocculent ( for the want of a better term).
is it possible that the water is supersaturated with the borax and it is coming out of
solution?