This is the first time I have ever posted anything so if I get it wrong I am very sorry.
This is my problem I opened my swap this week and know have crystal clear water all my levels seem to be right
However, over the winter time I think my algae has stained my concrete to a nice brown. I have never had anything like this before. I have brushed and brushed and got a little off but not working so well. Do you guys have any Idea what could be wrong?
Also, I have noticed that my concrete is chiping on my stairs I have owned this inground pool for over seven years and have never seen anything like this.