as a general rule of thumb imho, when ordering crystals, a 1oz bag can go a very very long way is stupid cheap. I always order my crystals in the fall or winter when I know the shipping temp will not be high enough to liquify them. In the event they do liquify for whatever reason, they will always reharden. When mixing its alot easier to mix in a crushed powder form of the crystals anyway. faster melting this way in the liquid.