Just converted to a SWG a couple of months ago.
I have a pop up pool cleaner system and around the pop ups there are black/gray streaks around each one. I have had these streaks for awhile but are getting worse. There are also the same streaks on the wall under side jets. These streaks are now getting a few feet away from the jets along now with few yellow spots on pool bottom 1 by 3 inches but water is crystal clear.
I have the water tested several times for metal and other stains but can't identify stains. I've added chemicals well over 100 the past month advice of Pinch A Penny but stains are getting worse. Was going to try to find a pool doctor but found your web site.
Added treatment to remove phosphates, added algaecides, Had Water tested July 3rd again at another P A penny
FREE CHLORINE 10.0 (Turned SWG down to one.)
Was told I had to shock water weekly even i f fc was normal. PH 7.6, total alkalinity 100, ca hardness 375, stabilizer 60, tds 5k, salt 3700. Does anyone have any ideas? Thanks, Paul J
Pool is 10k gal aggregate/gunite, cartridge filter, circupool 30k SWG. I live in Orlando, Fl and am on well water that is on a water softner/filter/chlorine system.