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CO2, low PH and Ammonia

1K views 3 replies 4 participants last post by  Diana 
#1 ·
I read in this forum that below PH 7, NH3(ammonia) becomes NH4 (ammonium) and NH4 is harmless to fish.

So if I add CO2 and that brings the PH down...does that still work to convert NH3 to NH4?
 
#2 ·
I wouldn't say the pH is at 7, but at acidic pH, the equilibrium is favored towards ammonium, and at higher pH, ammonia is favored.

Injecting CO2 will lower the pH, and thus ammonium will be favored.

However, I would recommend that you strive to have 0 ammonia and ammonium in your aquarium.
 
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