I have exposed aggregate (EA) surrounding my pool and also my patio. I was told by someone that by doing an acid wash on my EA that I could get it looking brand new. Has anyone ever done this before? The EA is actually is great shape for being over 30 yrs old. Everyone that I have had come by to bid on pouring a new concrete section has commented on it's quality and appearance over time. He told me that the acid wash would really clean it up and "make it shine". I'm just looking for some feedback before I start the project.