Thousands of yellowish [grey poupon] colored spots

[DavidD]

I've never seen it before however I have limited experience with gunite. You say these spots are "pitted". Do you think the top coat of the gunite is gone in these areas?

[jacthiele]

DavidD,

yes, I do suspect that the top coat is gone at each of these spots. I just dont know if I have algae growing in them, or that is the color below the top layer, or more important , what caused them all to happen.

I will submit a picture when I get my camera fixed.