FC 28
CC 0
TC 28
pH 7.6
TA 200
CH 220
CYA 80-85

Water is clear, not crystal clear yet, but wonderfully better. I had to keep FC over 40 for 2+ days to see significant improvement. Brushing daily helped also. Once all the stuff started filtering I had to backwash several times as pressure rose. That led to fresh water being added which lowered CYA. Dry acid has helped maintain pH and slowly lower TA. Now that algae is basically gone I can focus on getting CYA to levels where lower chlorine will maintain it.

Keep posting success stories as they will encourage others like me to persist in following the wisdom in this forum when patience begins to waver.