Kurt - I haven't asked the builder yet, but I guess that's the next logical step. I'm guessing though that Stonescapes isn't plaster-based as they have taken the pebble all the way out of the water for our beach entry. They also gave us an option not to do waterline tile specifically because of this reason (although we went with water line tile to have that "finished" look). Wouldn't plaster have to remain underwater?

DawnDenise - I was using bleach exclusively prior to firing up the SWG, so no calcium hypo.

Thanks!