I converted my pool to salt in the spring and everything has been operating normal chlorine is producing and holding good. However, I started developing a light brown/tan staining around the bowl and sides of the deep end that won't brush off. They are also visible around the swim out of the deep end and there are a few spots around shallow end.
I am wonder if I should be using some different type of stain and scale treatment with the salt water. I see that there are several products available just for salt water pools in regards to maintenance and staining.
Is there common or preferred one being used by the majority? Any ideas on my staining problem?
I tried the Jack's Magic stain test kit and it appears that the Stain Solution #2 (Iron, Cobalt & Spot etching lighted the stains on the swim out. My water has been checked for mineral and none found or only very light trace of copper.
My second problem is the PH is will not stay in range climbs above 8.0 every week. Is this common with salt?