All numbers look good (except CYA high at 80), but I can't hold FC -- it drops about 2 ppm per hour.

I put in 2 pounds ascorbic acid, and 10 pounds citric acid, into my 30,000 pool.

How much chlorine will it take to burn out any remaining ascorbic/citric acid? I read that it takes 2.5 pounds of ascorbic acid to de-chlorinate 1 pound of chlorine, which would mean I'd only need 5 pounds of chlorine...but I've added about 14 pounds of chlorine so far.

Does the answer depend on my 80 CYA level? I understand that higher CYA levels can make chlorine less effective, but I am not sure whether CYA level is relevant in this case. If the high CYA level is the problem here, then could I need 50 pounds of chlorine (10x the scenario above)?

Does it matter whether how I add the chlorine - a little every day vs. a big shock - in terms of wiping out any remaining ascorbic/citric acid?

Thanks!