The present concept a wet abrasive blasting system includes a splitter manifold receiving compressed air from a source of compressed air. The splitter manifold includes at least two passageways and also a manifold pre-nozzle associated with each passageway respectively. The splitter manifold communicates air through the passageways to corresponding air conduits which feed compressed air to at least two wet blasters respectively wherein the blasters each include an exit nozzle which are substantially the same or smaller in size than the pre-nozzles.