Last week the pool plastering company sent a guy by to test removing a large ash stain from my pool. He successfully removed it in a couple of areas with ascorbic acid and some other acid, but a few days later I noticed that the pool water had become cloudy, the ph had dropped below 6.8, and there was no chlorine. I successfully raised the ph to 7.2 with borax, but even after adding 3 gallons of bleach testing showed no chlorine. If anything the pool water is even cloudier.
Saw in another post that chlorine should be near 0 before using ascorbic acid. Mine was about 3 ppm before the acid tests. Is the acid combining with the chlorine to form the cloudiness? How do I clear up the pool and get the chlorine level back up?