Need Help Cleaning Liner

[Partsjockey]

Not sure if I'm in the right place ? If not someone will move it. Sorry and thanks at the same time We are trying to clean our vinyl liner it has some stain from the winter It's below the current water line anybody have any ideas on how to get rid of this ????

Thanks

 

[JasonLion]

First you have to figure out what kind of stain it is. I suggest starting with a vitamin C tablet left on the stain. If that has an effect it is an iron stain. If it doesn't we can try something else.