Dark round stain the size of quarter

richmgreen

LifeTime Supporter
May 26, 2010
166
Central Connecticut
in 2 spots on the bottom of our IG vinyl pool, there are 2 dark round stains. Tried to scrub them off with no luck. Any idea what causes it ?

.. it was found when we opened the pool after the winter.

Also, Any ideas on how to remove?

Thx
 

flagirl

Active member
Jul 17, 2007
25
NW FL
Could something metal have blown in the pool? We had to have our roof replaced winter 2004 after a hurricane. The following month a storm blew some loose roofing nails into the pool and left stains much like those you describe. I just had to live with it until time to replace the liner. (Now!)
 

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