Looking for an opinion(s). I am using stacked stone on my raised bond beam. I was considering bring the stone into the water but understand the scum line would be difficult to clean…..soooooo I found a 6x6 tile made from the same stone. It appears to be some what rough but at least it is flat. How tough will be to keep clean? I am looking for the natural blended look instead of a contrasting tile that will stand out.