Waste is removed daily from our zero water exchange systems and applied as fertilizer to various trees and plants. The waste contains a small amount of salt which contains all of the elements needed by plants except nitrogen and phosphorous, which of course is in over abundance in our systems. When applied with the right protocol, as the sole nutrient input in poor conditioned soils of subtropical Panama, plants thrive as displayed. The pictures below show the results. In total, 22 trees, 12 herbs and many vegetable plants grew exceptional well on the waste from the zero water exchange systems.