[Split by moderator - Please keep questions in your own thread. Thanks, jblizzle]
I'm having a similar problem. Although my CYA is not quite that high. It's north of 120 though.
FC - 13 (I'm keeping it high because of the CYA issue)
CC - 13
pH - 7.4
TA - 90
CYA - 130
Pool calculator says replace 67% of the water. Is it as simple as eyeballing the draining process until it "looks" like I got 2/3 of it. I'm worried about damaging the liner. Is there a certain technique to draining this much water?