General Characteristics similar to a swamp invention type 1 and 2 are combined with the filter to help plant growth can be the traction and may be used as a filter that has been rock, gravel and sand, as well as one or several.The system is in the water under the sink filter floor (Under System drain), and this type of marsh invention is also a ventilation system (Ventilation System) to avoid wireless weather conditions occur in the root crops.This Wastewater Treatment System can be a burden, there is organic boosting the intensity of BOI, the system is in the range 500 - 70,000 mg/L
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