Hey all. I’ve been dealing with what I assume is scale buildup under our granite spillover for a while now. I had the builder clean it up about a month ago when they fixed the grout line, but it is back with a vengeance. Any ideas on how to clean it up and maybe prevent it from recurring? My CSI is almost always between -0.3 and 0.05, so I don’t think my water chemistry is at fault. Tried to knock it out with a pumice stone today, which helped a bit, but not nearly enough. I’ve attached a couple pics below. Thanks!