"It was only later that I realized the shellfish tank is the heart of the aquaculture operation." Chang explains that lobster excrement contains nitrogenous waste; unless organically treated, it becomes toxic. He found that he could raise bacteria in the pond to organically break the material down, and produce plankton to boot. "The lobsters can live much more happily this way."
「後來我才瞭解，貝殼池是整個養殖場的心臟」，張守煌解釋，龍蝦的排洩物是含氮廢物，如果沒有經過生化處理，就會變成毒氣；而貝殼池可以培養細菌，用來生化分解，再產生蜉蝣生物，「這樣龍蝦就可以活得很愉快。」