Hi guys! I recently did an ascorbic acid treatment on my pool. Everything looked great for a couple of days and then the water started turning gray/green. It wasn't cloudy and nothing dispersed upon being brushed, so I concluded that perhaps I hadn't added enough sequestrant (I used HTH metal stuff). Within hours of adding more, the pool improved drastically and by the next morning (after running all night) it had returned to normal. Fast forward three days and my pool water has gone from perfect this morning to gray again! Anybody have any ideas? I figure I just need more metal sequestrant? But surely I shouldn't have to be adding it every three days??!!
28000 gallon salt water vinyl pool