Cleaning rust stains from fiberglass spa seat and floor?

[rcsmitty]

A bottle cap got into our fiberglass hot tub, and made some rust stains on the seat and bottom. Anyone have any tips on removing the stains while the water is still in tub? Looking for something that's not abrasive!


15,000 gal fiberglass pool and spa, SWG, Pentair variable speed pump, Easy Touch controls, Aqua Cal heat pump.

 

[banditig]

I suggest a rag soaked in bathtub/Fiberglas shower cleaner. I treat a hot tub much like your house bathtub, but some probably disagree

 

[JamesW]

Try some vitamin C.

 

[MarianParoo]

Yup. Since it's localized, I would use some vitamin C tablets in a sock and scrub the stains. Should work right away.

 

[rcsmitty]

Thanks everyone! The Vitamin C did the trick!

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[MarianParoo]

Excellent! Keep an eye out. You may get a little return where the surface was a tad more porous. Thanks for the update!!!!!