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Old 01-26-2013, 11:52 PM   #6
driftwoodhunter
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Perhaps I've had the wrong idea of what my fish need all along. Some searches come up with these general ranges for my main tank inhabitants;

Buenos Aires Tetra;
pH: 5.8-8.5
Hardness: to 35 dGH


Colombian Tetra;
pH : 6 - 7
Water Hardness : 6 to 15 dH (I assume that's dGH?)

if so, my GH at 7 could go higher, as well as my KH - but keeping the pH in the Colombian Tetra's range might require a bit of peat, oak leaves, etc. if it goes too high. I already have massive amounts of driftwood in there, so maybe that will buffer sufficiently.
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