Safe to acid wash?

[QPSUtah]

Have customer with 5 year old plaster (new pool). Has some extensive copper staining (using some “blue” chlorine product).

Plaster feels smooth to the touch.

See pics. This forum has me paranoid about acid washes now.

 

[ajw22]

If it is copper staining, then sulfamic acid treatment, followed by draining the water, is safer for the plaster.

Copper in Pool Water - Further Reading

www.troublefreepool.com

 

[QPSUtah]

If it is copper staining, then sulfamic acid treatment, followed by draining the water, is safer for the plaster.

Copper in Pool Water - Further Reading

www.troublefreepool.com

Sulfamic is just as effective?

 

[ajw22]

Sulfamic is just as effective?

Yes.

You find Sulfamic acid in Jacks Magic #2 Copper and Scale Stuff.