Stains

[CWalshAZ]

Good afternoon,

Acid washed my pool, and there are some stains that were not effected at all. I tried a heavier acid ratio, vit c for potential metal, nothing did the trick. Anyone have any suggestions on what it could be & how to potentially remove? Looked closely at the stains abd they look to be raised almost like scale but again, I'm unsure.

 

[ajw22]

Welcome to TFP.

Try polishing the plaster using a rotating polisher with diamond pads.

Plaster Installation and Maintenance - Further Reading

www.troublefreepool.com

 

[CWalshAZ]

Welcome to TFP.

Try polishing the plaster using a rotating polisher with diamond pads.

Plaster Installation and Maintenance - Further Reading

www.troublefreepool.com

Tried a 50 grit diamond pad, it pretty much did nothing.

 

[ShallowWater]

Tried a 50 grit diamond pad, it pretty much did nothing.

With a power polisher or by hand?

 

[CWalshAZ]

With a power polisher or by hand?

Power, pad attached to angle grinder. There were some areas where it was working, but most areas it essentially laughed at me and didn't make a dent.

 

[mknauss]

You are sure it is not the gunite showing through?

 

[TinFoilHat]

I'm thinking this pool needs new plaster.

 

[ShallowWater]

I'm thinking this pool needs new plaster.

You are sure it is not the gunite showing through?

You're both probably correct on this one. Couldn't quite see it on my phone buy on my PC it is obvious the plaster is shot. It has rather large pock marks in it probably from aggressive acid.

@CWalshAZ Get it re-plastered. We can assist with that as well as getting it started back up when it is refilled.