What proliferated instead was the non-native water hyacinth that kills off ponds. It had grown into large mounds after being dredged up by excavators hired for more than NT $ 1 million. These plants were taking over the lake's surface with amazing speed, squeezing out the plants that originally grew in the lake, while also preventing the fish and shrimp underwater from getting any sunlight.
另一方面，多的卻是已經花費一百多萬元雇用挖土機撈出、堆得猶如一座小山高的外來種「埤塘殺手」布袋蓮，不斷以驚人的速度擠滿池面，一方面排擠其他原生種植物的生長空間，另一方面也使得水底下的魚蝦見不到陽光。