I recently installed a Hayward T-15 SWG and have 3900 ppm salt. Pool is gunite and over 10 years old. I increased calcium hardness from 225 to 350ppm. CYA is very high due to previous home owner at 150, so I am keeping my chlorine at 7 to 9 ppm. Ph is kept between 7.2 and 7.5 with an alkalinity of 110. After swimming and splashing in the pool today, I see a white haze on my tile above the waterline that appears to go away when wet but drys white. What is this? How can I get rid of it?
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