Thread: air hujan dan PH air.
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Old 11-27-2006, 02:19 AM   #1
I_T_L
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Default air hujan dan PH air.
Bros mau tanya ni.Air hujan itu nyebapin PH turun atau PH naik?Apa aja yg nyebapin PH naik dan PH turun?Thanks.
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