D DrSnake 訪客 2002/09/14 #4 all heavy metals are toxic to fish and invertebrates! I think U should immediately remove that!!
A andyhu 訪客 2002/09/14 #5 補充鐵元素,以前水草缸也聽人說過放鐵釘到水草缸,不過有位同好跟我說,那只有剛開始時有用,他說什麼後來怎樣....又二價鐵...什麼的,我就把話題轉開了,超過我的知識範圍了>.<