Chris:

You had found it odd that calcium deposits form more quickly under higher temperatures. Actually, this is not odd at all, since when calcium is present in hard water, and when the water evaporates, it leaves behind the calcium. And since water evaporates quicker at higher temperatures (boiling being the highest temperature that water can reach, when it is not under pressure), the water will evaporate faster.

Thus the Laws of Physics have again been proven immutable.......Andras