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Re: [APD] pH control

Pure water with only CO2 dissolved in it will produce bicarbonate as the carbonic acid-bicarbonate buffer system. Organic acids will also buffer the water down in the pH 5 range. Sergio Canabal is a member of the New Jersey Aquatic Plants Club and his tank is a CO2 very high tech tank. Here is the article on him http://www.aquascapingworld.com/magazine/September-2008/September-2008/Down-the-River.html He has very low pH an low KH.
Jerry Smith
Bloomingdale, NJ> Message: 7> Date: Tue, 09 Dec 2008 21:36:11 +0000> From: Stuart Halliday <stuart at mytriops_com>> Subject: Re: [APD] pH control> To: aquatic plants digest <aquatic-plants at actwin_com>> > I believe BRiaN Forsythe wrote this email section below:> > Which is all why I suggested one would want to add a bit of buffer to RO> > water. Unless you're keeping blackwater species or the like, you generally> > want a few degrees of KH to protect the water from wild pH fluctuations due> > to organic acids, etc. (Thus the term "buffer".)> > I read that API pH down works by reducing KH. So what buffers water at a pH > of say 5?> > My tap water is a pH of 6.6-6.8 and has a KH of 1 (if that) with zero GH.> > Sodium bicarbonate, which I use to buffer my water, does it by producing HO > so it raises the pH. What buffers at a low pH?> > -- > Stuart Halliday> http://mytriops.com/> 200 Million years in the making...
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