Water lotus and duckweed are grown in an "ecopond" because these aquatic plants are highly sensitive to pollution and function like water-quality gauges. Before the groundwater is channeled into the ecopond it is run through an aeration and sedimentation basin to filter metal ions. Fish and shrimp are also raised in the pond, creating a self-sustaining ecosystem.
大水池上種植水蓮、浮萍等對水質敏感的水生植物，做為水質監測指標，地下水抽入生態池之前，會先經過曝氣沉澱池，過濾去除金屬離子；生態池裡還養魚蝦，構成生生不息的生態系統。