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Unread 12/30/2017, 04:15 PM   #4
bertoni
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Join Date: Mar 2002
Location: Mountain View, CA, USA
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Vinegar is an acid, so it will lower the pH. As it is consumed by bacteria, the pH will rise though, and aeration will help, too, by bringing carbon dioxide into the tank to counteract the "consumption" of carbon dioxide by the H+ ions from the vinegar.


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