Quote Originally Posted by chem geek View Post
As Carl says, if you measure your pool's water chemistry regularly, then you can stay on top of the CYA level.
Richard
You can measure your CYA to your heart's (and Taylor's) delight day in and day out, but if you keep using trichlor and there's no significant fresh water exchange in your pool, your CYA will keep rising up to a critical point. Ain't I singing to a choir here?