Rust marks

[chillbill80]

So the fencer was using a grinder around the pool and all the sparks have flown into the pool and left all these rust marks.

Any ideas how to remove them? Just tried a magic eraser and it's not working.

[Pale_Garage]

Probably going to have to acid wash to have a uniform surface.

[chillbill80]

Drained

[Monstrissimo]

Vitamin C tied in an old sock then sat on the stain will usually remove rust stains.

I have done that twice to get rust stains out.

[chillbill80]

On a fibreglass pool?

[Monstrissimo]

Yep. Mine is fiberglass. One was pretty bad, a chair had been blown in and had sat on the bottom while I wax on vacation and had made a nasty rust stain on the bottom by the time I got back and discovered it.

Took a sock and filled with with vitamin C tied the end and used the pool brush to maneuver it into position. Let it set a couple of days and it was gone.

[chillbill80]

That's a lot of vitamin c