discolaration

All, I have problem with my pool. Please see attached picture for reference. I have discoloration around pool however that is not coming off regarding how much I clean. What can I do ?

Not sure how it happened as our pool company closed and opened and acted as if they had no idea, but the third step had a piece chipped off. (My neighbor insists they dropped some hard pump in it but I have no proof). We have someone plaster the edge and the shape/size seems good but it’s now...

We had a Quartzscape Tahoe blue done on our brand new pool in February 2019. The product was purchased from NPT Tile. After the job was completed I asked the plaster guy about the discoloration and some of the foot prints that were visible on the surface - he told me that it takes time for the...