Good morning, it's been a while since I've been on. Bought the big test kit and things have been going well. Sorry I haven't needed you, but now I have an issue again....
I've noticed a gritty subtance on my pool bottom and sidewalls. They feel like sand paper and this is on a vinyl pool. I'm guessing hardness level. I have the good test kit but I wanted to start in the tight direction so I started here. The water is crystal clear.
15x32 vinyl oval
1 hp, sand filter