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Re: Aquatic Plants Digest V5 #331
Paul Sears wrote, in part: "Don't add more than a tiny amount. The NH4+ ion
is in a _very_fast equilibrium with NH3. The concentrations of the two are
equal at a pH of about 9.25. At pH 8.25 the NH3 concentration is 1/10 of
the NH4+ concentration, at pH 7.25, 1/100 of it, and so on."
And I wonder, in my 72 gallon tank, KH=4.5, pH=6.6-6.8, how much is "a tiny
amount"? Would adding 1/4t be stressful to the fish? 1/2t?
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