I am a new pool owner in Chicagoland and after having kept my pool up to snuff the majority of the summer, these recent storms have me reeling. I think I am dealing with some sort of black algae but after brushing, shocking and using algacide, and brushing lots more, it is still there.
I had a pool guy come out to get a quote on repainting/plastering my pool as there is some paint peeling a way and the floor is getting bumpy and he thinks that the black spots are actually areas in which the cement can be seen through the worn down paint.
Is this even possible? Again new pool owner here!