The Planted Tank Forum - View Single Post - Ridiculously high ammonis, fish acting fine, new test kit..whats going on?!
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post #9 of (permalink) Old 01-31-2013, 04:56 AM
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Cthulhu's Avatar
Join Date: Dec 2012
Location: Montreal
Posts: 240
Take a look at this

A pH below 7 means there are more H+ ions than OH-.
So when water is acid and already has lots of H+, extra H will tend to stay attached to NH4+.
When water has less H+ than OH-, H will detach from NH4+ and there will be more NH3.
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