Hopefully this is the best place for this.
New to pools and unfortunately we didn't notice this crack surrounding half the pool. Its between the top of the tile and the coping. At first I thought maybe it's just grout, but the crack is pretty deep. The depth and width varies as you go around the pool. It's as if the concrete is lifting. I guess you could say it's a cantilevered concrete deck and not typical coping nased on what I have seen. What's the best way to fix this?
I can't figure out how to upload a photo from my phone.