I have a newly install 15,000 SWG with dark blue luna quartz. (No salt on startup just tabs in skimmers) PB said brush 2-3 times a day while the acid was in. We did. 6 days after the pool fill, the PB did their start up routine. neutralize muriatic acid, clean filters and brush pool. Day 7 pool school. PB tested water and said needed 2 qts. muriatic acid. They installed the acid. Two days after we noticed white spots with streaks in shallow end. Brushing does nothing. Any ideas on what's up?