Stick to the one pack even if it’s more expensive
I’ve had two experiences with this product. The first time I ordered the one pack, which was great and the crystals were fine. The second time I ordered the value pack. However, it couldn’t be any different!!! The Crystals, in the value pack, were too small and fine and more of a powder than crystals. Even the colour of the blue crystals in it were different. It’s more like silica sand, not crystal. Stick to the single pack even if it’s more expensive.