Topic: 解決他吧 謝謝

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Posted by: ParkerTai1105
Posted on: 2009-03-23 21:17

養水草及魚

請問
1:PH,KH,GH應大約幾多?????

2:多少KH,GH為硬水,多少為軟水?????

3:應用軟水還是硬水?????

4:是不是PH低,KH及GH都會低?????

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