The longer the cycle, the larger amount of energy will be in the water. (Hexagonal Water has a tremendous capacity to store and transfer energy - much more so than regular water.)
At 9 minutes, NMR spectroscopy verifies that the water is hexagonally-structured. Dissolved oxygen testing shows increases of up to 30% oxygen. pH tests show significant alkalization and Kirlian photography reveals substantial energy enhancements. It is recommended that everyone begin with 9 minutes. As you become accustomed to drinking more vitalized water, you may want to use the 18 or 27 minute cycles.