How to remove stains?

[jrbevis]

Hello everyone,
Towards the end of last year, I started to get this staining above the water line in my pool. I accidentally let my CH get too high because I wasn't doing the test correctly and I believe that's what led to my problem. I'm curious if anyone has a solution to remove this staining. I'm about ready to drain a portion of my pool to get my CH in check and thought I'd address this problem at the same time. I've tried scrubbing it but that didn't show any sign of improvement. Is this when an acid wash is applicable?
Thank you

 

[mknauss]

You have plaster ABOVE the water line?

 

[jrbevis]

You have plaster ABOVE the water line?

I do indeed

 

[mknauss]

I do indeed

Sadly, you live with it. Anything you do to remove the scale, will damage the plaster. When you remodel, you tear that out and install a proper water line tile that you can clean scale off of.

 

[jrbevis]

Sadly, you live with it. Anything you do to remove the scale, will damage the plaster. When you remodel, you tear that out and install a proper water line tile that you can clean scale off of.

Roger that, thx.