How do you remove a salt stain from a pebblecrete pool?

To remove a salt stain from pebblecrete, first, mix equal parts of white vinegar and water in a spray bottle. Spray the solution directly onto the stained area and let it sit for about 15-20 minutes. Then, scrub the stain gently with a soft-bristle brush and rinse thoroughly with water. If necessary, repeat the process until the stain is gone.