Vivo Aqua - In the Vivo Aqua whirl system, water massage jets are targeted directly at your body through six or eight nozzles (depending on bath design). Air can be optionally added to massage jet after the Venturi principle for a pleasant, massaging pressure on your skin and base layer. Massage effect can be smoothly increased by the turn knob to receive a soft vibratory massage with relaxing depth effect.Water is pumped through blue hoses. Air for the passive addition of air is fed through the red hoses. Hoses are arranged in such a way that the whirl system empties completely when the outlet fitting is opened. Thus the highest hygiene standards are met.