@ BigDave: he's in Canada, so it's unlikely he has a decent test kit. Lowry & Assoc has a monopoly on Taylor kit distribution in Canada, and charges what many consider to be extortionate prices.
As a result, it's unlikely he has any idea what his actual CYA level is . . . nor any good way to determine it.
@ PoolQ: It's unlikely cedar has anything to do with it. You *can* test to see if the issue is CYA, by adding a known quantity of PLAIN 6% (actually CHECK the %) bleach in the late evening. Test the chlorine 1 hour later, then in the early morning, and again that evening.
If your chlorine level drops little overnight, and a lot during a sunny day . . . you have a CYA problem. Otherwise, not.
Bookmarks