Does anyone have any information on what the desirable thickness of ice should be in an arena. I've always believed 1/2"-3/4" tops. Can the ice temperature be turned down lower then the 15-19 degrees that I've been familiar with? Does the temp of the ice reach a point where it becomes to cold and begins to shatter? Do figure skaters need softer ice then hockey players? -- John Hack, SID UW-Superior