Abstract: A pulsating hydrotherapy jet is disclosed which has a jet body with a water inlet to allow water to flow into the body. The jet body discharges the water through a discharge member in more than one concentric pattern. A cap mounted on the body to receive the circular water patterns is also disclosed. The cap has a number of openings that form more than one concentric opening ring. Each of the opening rings align with a respective one of the circular water patterns to provide the sensation of a number of circular patterns of multiple pulsating jets. A system for providing a hydrotherapy jet to a reservoir of water is also disclosed. The system includes a reservoir shell capable of holding water with a number of hydrotherapy jets according to the invention that are mounted around the reservoir shell. A water pump system circulates water from the reservoir to the jets.