I opened my pool today and CYA is at 20 vs 50 when I closed it for the fall. We had some heavy rain this winter so since I drained a few times I thought it would be lower, but not by this much. I also thought that CYA could ONLY be reduced by draining, but now I read the following on TFP.
"Users need to be mindful that their pool’s free chlorine levels will decrease after addition to the water. In the summer, an average pool may lose 3 ppm of FC per day, while it can take weeks to lose 3 ppm of CYA"
What? So it disspates on it's own!? That's new to me, any opinions
"Users need to be mindful that their pool’s free chlorine levels will decrease after addition to the water. In the summer, an average pool may lose 3 ppm of FC per day, while it can take weeks to lose 3 ppm of CYA"
What? So it disspates on it's own!? That's new to me, any opinions