Hydro-Air Converta'sagge Spa Jet Assembly
The Hydro-Air Converta'ssage jet is a simple and inexpensive option for gunite (concrete) spa jets. This jet comes with a 1/2" orifice and is designed for 20-25 Gallons per minute of flow.
The use of a blower to "Turbo Charge" the air loop is not recommended.