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送交者: html 于 July 02, 2009 02:41:45:
回答: bacteria有凈化作用。所以換水不能全換，洗過濾器的時候也要用魚缸抽出來的水戲。 由 春思梅 于 July 02, 2009 02:28:29:
魚兒餓不死。
還不用撈屎