Just opened our 7-year old vinyl liner pool.
The (I assume acrylic) plastic steps have some discoloration/staining on them.
steps (1077 x 808).jpg
The stain does not brush away nor does my pressure washer do anything.
There did not appear to be anything like leaves etc on the steps when I took off the cover 2 weeks ago.
Any suggestions for getting them white (or less brown) again?
pH and chlorine levels are now in normal range.