The most important factor in the development of bonds from ions on the surface. The surface encourages the growth of the bond. These bonds are also formed in normal water pipes. According to the “Brownian motion of molecules” a bond is created whenever a certain number of calcium and magnesium ions meet in a certain constellation. This creation of bonds is completely random. With the knowledge about these surfaces, we set out to develop a surface that the calcium ions would accept as a template and form into crystals. Critical for the development of crystals is the enthalpy.