In my last set of icesperiments, I froze, melted, and refroze (tap) water to see if it became clearer on successive refreezings. It did not.
This time I compared tap water with distilled water to see if one would freeze more clearly than the other. I froze it, then melted and refroze it four more times. Though neither froze super clear, there were differences:
The tap water seems to freeze either clear or not clear, where the distilled water freezes in more of a bubble starburst. But in the end I'd say there's not enough of a difference to matter.
After the break, a closeup of the distilled vs. tap ice.
The icesperiments shall continue!