My father in law asked me to help close his pool. I like using my test kit, and believe in the BBB and the calculator, so I agreed to give him a hand.
His pH was low, around 6.8, so I asked him to go get some Borax.
I added the Borax per the calculator and now his pH is at or above 8.2 (as high as my test kit will read).
This is my own stupid fault, I fat fingered an entry into the calculator, and added 2 boxes of Borax instead of only 1.
So my question is this, do I really need to lower the pH down to recommended levels before closing his pool? What would the negative effects be on a 12,500 gallon vinyl AGP?
Thanks in advance.