Please look at the pics attached. I have stone and masonry that abut the plaster in my pool....and is below the water line.
Many spots have cracked or have holes where algae can hide.....no way to brush out.
I've slammed my pool 3 or 4 times over the last 2 years. Each time, the OCLT has told me that I've been successful in killing the algae. That lasts for a few weeks, then it's back.
Particularly aggressive this time.....can't go 2 days without yellow walls.
Am I screwed until I get my pool redone and the mortar spots filled in? Any other suggestions?