Borax Questions for Commercial Pool

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?

1. Not sure what was added, but borax does NOT cause foaming. Did he add "Boraxo" detergent?

2. We don't support indoor pools, as a rule. The chemistry is different and much more complicated.

3. We don't support commercial (ie, non-residential) pools. The chemistry is different, code-regulated and much more complicated. Also, there is public health liability, both morally and legally, when it's done wrong . . . and it almost always is.

FWIW, I worked professionally with commercial pools for almost 30 years, so I'm not just talking off the top of my head.


Sorry . . . thread closed.