The exclusive hydrotherapy action created in all Clearwater Spas is a mixture of warm air blended with a balanced warm water flow. This Clearwater Whisper Flow Technology begins from a full frame pump designed to deliver high volumes of water while reducing the noise associated with other brands. An exclusive manifold plumbing design guarantees an even distribution of water to each therapy jet. Warm air is introduced to the water stream as air from the heated interior of the spa cabinet is pulled through an adjustable valve you can control yourself into the water flow at the hydrotherapy jet. The result? The most stimulating hydro massage you can imagine, and only from Clearwater Spas.