A hand held hydro-suction vibration bio-stimulator submerged below the surface of a liquid in the liquid filled vessel and connected to a fluid supply by means of a flexible hose to create a periodical suction force in the range of 0. The monitoring system can be used to determine a current utilization of casino activities so that an optimal mixture of activities can be offered by the casino. a feed supply for providing hot or cold feed water to the washing zone;c. The precursor gases are injected into mixing channels where the gases are mixed before entering a processing volume containing the substrates.