A question for the plumbers out there: A couple months ago, I decided to replace my 18-yr-old water heater before it caused some serious problems. For several months prior to that (and even now, but to a much lesser degree), there's this white material coming through the hot water pipes and occasionally clogging the flow restrictors in some shower heads and faucets. Are these accumulated mineral deposits from the old tank? It seems to be smooth on one side (I assume the tank side) and rough on the other, and there seem to be a few rust-colored spots here and there.
Ideas?
http://i301.photobucket.com/albums/n...aterheater.jpg
Mike