To test the unit, I made sure all lights were green and took a water sample directly from the return line and basically there is no chlorine. To prevent algae I am having to hit with bleach every other day. Water looks absolutely perfect but will fade fast without CL.

Any ideas? Is the unit bad? Do I need to do a reverse cycle manually to clean the electrodes? Appreciate the help. This salt system thing has been very frustrating as it has caused my natural stone coping and tile to begin to pit, fade, and erode away. Yes, I sealed it last year but have not done it again this year. I almost am over caring about the coping and am getting used to the rustic look and pits but now no chlorine. Argh....

Thanks in advance.

Are you sure your stone is natural and not manufactured stone? I use to sell stone products on the side and though nobody ever told me, I KNEW not to use manufactured stone around a pool. It is a lightweight concrete and is essentially decorative in nature. Salt and chlorine is going to eat it up eventually. Natural stone is MUCH denser and should last longer, but no doubt different types of stone have diffferent chemical makeups, some which will react with NaCL (salt)

Scott