I'm trying to figure out what the best treatment is for my new issue. We moved into the house last year, and everything was nice and white, at least compared to what it looks like now. I'm on city water, so I don't think there is iron in the water. The previous owner used a pool frog hybrid system, but it didn't have a cartridge put in last year. I know there's some copper in the water left over from the previous year's mineral usage, but it's been diluted since I closed the pool last year and topped off this year. The steps are discolored below the water line. It is more noticeable toward the surface of the water. The jets and skimmer faces are also discolored. Not the nice sparkly white they are supposed to be. I've seen a couple threads from a few years ago about the ascorbic acid treatment and the Jack's magic stair stuff. What is the best way to get all these things nice and sparkly again? The water is beautiful thanks to this site.
Test results are as follows:
Any insights you can provide are greatly appreciated.