I have been battling algae since I uncovered the pool in May. Twice I have shocked, brushed, vacuumed, and sweated my way to crystal clear water. But every afternoon I would have yellowish brown deposits on the bottom. After the first attempt I put my solar blanket on and within a week had green stuff on the sides. I started over with shocking, etc. and now I am back to clear water but the yucky deposits are there every day. Todays numbers:

FC = 6
TC = 6
CC = 0
PH = 7.2
TA = 90
CYA = 80

I have been using trichlor pucks for the past three summers with BBB but I shut off my injector this year and went to total BBB. If this is mustard algae, I know shocking is the only way to go but with my CYA so high, I am afraid to damage my liner with too much chlorine. I have been vacuuming to waste every day and refilling but the CYA is going down very slow. I now have a Taylor K-2006C so at least I can measure it. Is the yellow-brown stuff dead? Why is it there every day? Where to from here?