Quote from: fractalglobal on March 05, 2013, 03:46 pmI've found that freeze precip works best with a master crystal. I take out the largest crystal from the initial freeze precip, then re-heat the solution to room temp, throw it back in the freezer for a few minutes, then put the crystal back in and keep in the freezer.Crystals form much more readily on the outer edge of other crystals. Or even the side of a container, for that matter. Or so I read; never tested it, but it does support your suggestion.