Brown Spots on Pebble from Leaves

[ajw22]

I steer away from all Clorox pool products.

 

[dielseman]

Pictures help.

The stains didn't get there overnight. Expecting them to be gone overnight is not realistic.

So, if the stains lightened with the tablets, that indicates they are iron. An ascorbic Acid treatment would be my next step


I have no idea what "A+ stain remover" is nor do I have any idea what the Chlorox stain remover is.

Stay away from "Magic bullets". Do the ascorbic acid treatment and report your results

Can you confirm this is the way? Ascorbic Acid Treatment - Further Reading

 

[dielseman]

Also how does this happen when I have maintained the chemicals?