Copper staining -- need advice on removal

[new2thepool]

One final update: We applied the ascorbic acid over the weekend with success! There’s still one patch where there is a stain but I will spot treat that. Overall it looks much better! I added a sequestering agent after the AA and will give it a good backwash today. Will be monitoring my levels for PH and chlorine in the coming days to gradually bring them back to normal. Thanks everyone for the advice. Looks like this was an iron stain indeed.

My pool is supposedly .4 copper as well. How did you do the absorbic acid treatment? Did you have to do anything after to keep it from coming back?

 

[ajw22]

Welcome to TFP.

Ascorbic acid treats iron stains.

Sulfmanic acid treats copper stains.

Ascorbic Acid Treatment - Further Reading

www.troublefreepool.com

Copper in Pool Water - Further Reading

www.troublefreepool.com

Acid - Further Reading

www.troublefreepool.com

 

[YippeeSkippy]

You want to determine how the copper got in to the water, in the first place. Well water? Chlorine puck use that contains copper? old pipes?
Determine that and avoid what ever you can.

Maddie

 

[Bperry]

My pool is supposedly .4 copper as well. How did you do the absorbic acid treatment? Did you have to do anything after to keep it from coming back?

Dont trust a pool store test result showing high copper unless you can also see evidence of copper stains. Their tests have an awfully large error tolerance and can show 0.3ppm copper even when there is no copper in the water.