I started a AA this evening. My numbers are FC .5, CC .5 and TC 1, PH 7.2, T/A 120 and CYA 40. I have a 20,000 ABG pool. I first put polyquart 60 in and put 1.75 lbs of ascorbic acid in and circulated for 1/2hour. The stains were still there so I put in 1.75 lbs. And 1 hour later stains were...