Quote Originally Posted by chem geek View Post
Charlie,

What is your pool's Cyanuric Acid (CYA) level and what was the Free Chlorine (FC) level before you found that the SWG wouldn't produce chlorine when the phosphate level went up? It is possible that the FC level was too low for the CYA level so the chlorine was getting used up fighting algae and the SWG couldn't keep up. Did you notice the water getting dull or cloudy when the SWG couldn't produce chlorine fast enough?

Did the manufacturer of the SWG give any sort of explanation for this? Did they say anything about phosphates directly interfering with their SWG?

Richard
Bingo! Richard hits the bulls-eye again!