X-Stream Aeroponic Propagator | NutricultureX Stream Aeroponic Propagator Nutriculture: Propagation setup and rooting capacity X Stream Aeroponic Propagator is a high oxygen propagation system designed for rooting cuttings and starting seedlings without soil. Stems or seedlings sit suspended above a reservoir while a pump mists the root zone with nutrient solution, encouraging fast, finely branched root systems with less potting media handling during propagation. Depending on size, the unit