Re: borax in the pool
The proper way to add borax is to add about half the amount of acid needed then immediately add half the borax needed and brush until it is dissolved. Then add the rest of the acid and the rest of the borax and brush. Check the pH in 48 hours and adjust to 7.6
There have been no reported problems when it's done this way, either with 20 mule team or with Proteam Supreme (both are borax!)
11.75'x23.75' kidney 6.5K gal IG fiberglass pool/300 gal acrylic spillover spa combo; Aqualogic automation/SWCG; Pentair Clean and Clear 150 cart filter; 1.5 hp uprated 2 spd Pentair Whisperflo pump; PF:17
Retired pool store and commercial pool maintenance guy.