After having read a lot of posts about staining I decided to post my own pictures because I'm not sure which problem I have.
The staining is greenish and doesn't come off when I brush. It's not scaling - the surface feels smooth.
I opened the pool a week or so ago and got rid of the green water - the filters are doing it's job at clearing the water and the FC is good and steady. I'm putting a lot of shock in which is normal for me early in the season. My SWG is not running yet and I have not added salt.
Before I venture in to an acid bath and brush the .... out of my pool I wanted to ask you smart people
My pool is 5 years old.
FC - 2
CC - 1.6
pH - 7.5
TA - 78 (little low I know)
CH - 360
CYA - 55 (a little low also)