When we first moved in to our house four years ago, I started using 3" chlorine tablets in a floater. While filling the floater, I accidentally dropped one of the pucks in the deep end. I figured it wouldn't hurt anything, but I fished it out a few days later after noticing it discolored the white plaster. Since then, there has been a yellowish stain about 18" in diameter down there and it has a 3" white circle in the center from where the puck sat. Is there anything that will remove that stain besides resurfacing?
Similarly, there are some dark yellow stains on the top step that I think may have been caused by the floater hovering over it in the 5" deep water. How might I clear that up?
I'm so glad I converted over to SWCG!