Folks - first of all thank you for all the great content in this forum. I am wondering if anyone could provide some guidance on identifying what the brown scratches/stains potentially can be.
This is an inground 40x20 vinyl liner pool. Water is balanced and looking good but I noticed that I am getting more and more what it looks like brown scratches. At first I thought was my robot pool cleaner (Natilus CC plus) but I inspected and it doesn’t look like anything could be scratching.
I am attaching some pictures. Any guidance on why this can potentially be will be great.
Thank you
This is an inground 40x20 vinyl liner pool. Water is balanced and looking good but I noticed that I am getting more and more what it looks like brown scratches. At first I thought was my robot pool cleaner (Natilus CC plus) but I inspected and it doesn’t look like anything could be scratching.
I am attaching some pictures. Any guidance on why this can potentially be will be great.
Thank you
