I need some help.
CYA: not sure, I have a hard time with this test, I would say its 30 or less.
We bought this house, and the pool was drained about 75%. The pump and filter were replaced, then I filled it up and SLAM'd it and the water is nice and clear.
Once it became clear, these stains appeared.
There are a few places where the stains are very dark and they are in cracks. Just looking for some advice on how to try and tackle the problems.
The pool has a filler near the top of the steps, and its attached to a water pipe at the house. The pool was filled with this mechanism, and the stains do seem to be heavier in the area where the water was coming out of the filler. But I do have lighter stains appearing elsewhere on the plaster too.