Re: If CYA is 40, optimal FC level is 4 - what rate will it
I hope this is not a hijack of the OP, but I think it is very similar question...
I am estimating my CYA around 30 or so in my Fiberglass Pool. For some reason I am freaked about run away CYA, so I am being very careful before I rise the level.
I am in sun nearly all day, but OHIO sun not TEXAS sun...I have been tracking my usage pretty tightly.
I go from a level of 4 FC to about 2.5 consistently every day.
If I understand Chem Geeks detailed chart mentioned above, it is true that I would be better off increasing my CYA to say 50 ?