Quote Originally Posted by jcarroca
have been using an automated hayward chlorinator and trichloro 3" pucks set at between 0 and 1. My chlorine does not seem to drop off even though I have the Chlorinator set very low.
I, too, have a Hayward inline chlorinator.....however, I no longer use it. It put too much chlorine in to the pool. I'd keep it set at low, and somehow ended up w/ anywhere from 5-10ppm. Tried turning it to off, and it continued to dump chlorine in pool. I do believe that this is a recurring problem w/ these chlorinators. Bad design.

I used to shock pool w/ granular product which also had stabilizer (CYA) in it. Heck, was shocking 2x/month the first summer, even if I had no CC reading.

In effect, I was getting way too much CYA in my pool. It's still 100ppm, and I've been using bleach only since last June. No drop off over the winter for me.

Pool store water testing results HOPEFULLY will show your CYA to be much lower, but that may be wishful thinking.

Good luck.

CaryB
Go "Canes!!