Horizen Hydroponic's 12-site Zen Cloner was built to meet the demand. In our stores, customers have long known of the benefits and ease of using aeroponic cloners. Horizen Hydroponics has spared no expense in putting together this amazing 12-site unit. This may look like a tiny, low budget unit, but don't say that to it's face. Using the right amount of water to keep the pump cool; the Zen cloner works, every time!