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Re: ph 6.4, kH 7.0 Whats going on?
>>>>> Colin Anderson <colin_d_anderson at hotmail_com> (here: "CA"),
>>>>> on Sat, 07 Nov 1998 23:15:50 PST,
>>>>> pondered the meaning of life, then wrote down:
CA> Hi Aquatic Chemists:
CA> I've been going through the FAQ's and other advice on the web and I
CA> can't believe the results. My general water chemistry is as follows:
CA> test tap tank
CA> gh 22 18 dH Red Sea Labs kit
CA> kh 7 7 dH Aquarium Pharm. kit
CA> pH 7.4 6.4 Wardley kit
CA> If I use the ph/kh/co2 charts on the krib I comes up with 70 ppm CO2.
CA> This seems like a toxic level to fish to me. However, the fish are
CA> prospering and look great. Also, this makes CO2 addition seem
CA> absolutely wrong. Is there any ideas out there on what could be
CA> happening here.
Do you use a pH buffer like "PH Down" or peat? That will change the pH
independent of CO2. You can't use the pH/KH/CO2 charts if you have peat or
a pH buffer other than the "natural" carbonate buffer.
Carlos E. Munoz
<cmunoz at crystal_cirrus.com>