black stain line around steps

[hsdancer]

What's odd is that we don't have the black stain on our liner, only on the fiberglass steps and swim-outs. I'm guessing the magic eraser didn't work with your stain? Joie

[tonyl]

I've found that Dow Bathroom Cleaner ("scrubbing bubbles") works good on cleaning the steps. I get the black stain every year and struggled with it before trying it out of desperation. Hope it works for you, we're very satisfied with the results.
Tony