I believe I've seen it said here that FC should be 7.5% of CYA. In other words, if your CYA is 50 then FC should be 3.75 (let's say 4).
I've also been referred to the Chlorine/CYA Chart which says that for a CYA of 50, FC should be 6 to 8, with a minimum of 4.
So is the 7.5% calculation that is often mentioned a "minimum" FC but not ideal FC level?
I've also been referred to the Chlorine/CYA Chart which says that for a CYA of 50, FC should be 6 to 8, with a minimum of 4.
So is the 7.5% calculation that is often mentioned a "minimum" FC but not ideal FC level?