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送交者: html 于 July 02, 2009 02:41:45:
回答: bacteria有净化作用。所以换水不能全换，洗过滤器的时候也要用鱼缸抽出来的水戏。 由 春思梅 于 July 02, 2009 02:28:29:
鱼儿饿不死。
还不用捞屎