It seems that sections of the sealant/caulking that runs along the perimeter of the pool, where the top of the liner meets the concrete deck is missing. Also, I see patches of growth along sections of the perimeter that's missing the sealant.
What is that sealant strip called and where can I buy it?
I plan to use a wet vac to clean out the nasty growth - is that a good way to do it? Then I'll use bleach to give it a good cleaning.