Stain Identification?

[JaySav]

Got the GoPro in the pool finally to get pics of some stains I’ve noticed and am looking for some advice as to what they are. Also I think I have some calcium scaling, what can be done about that?

 

[Texas Splash]

The spot in pic #3 looks like iron. Try placing a vitamin C tablet on it (or crushed in a thin sock) and see if it goes away. If it does - iron.

 

[YippeeSkippy]

Picture number 2 makes me think of calcium nodules....

Maddie

 

[JamesW]

Picture one looks like some general iron stains and some efflorescence on the grout.

Picture two looks like the top layer of plaster is wearing through and exposing the first layer of plaster, which is darker.

Picture three looks like an iron speck fell on the plaster or an iron wire tie is bleeding through.

 

[JaySav]

Picture one looks like some general iron stains and some efflorescence on the grout.

Picture two looks like the top layer of plaster is wearing through and exposing the first layer of plaster, which is darker.

Picture three looks like an iron speck fell on the plaster or an iron wire tie is bleeding through.

Thanks for the info, none of that sounds good.