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Re: Nitric acid

On Fri, 1 Dec 2000, Steve Groginsky wrote:

> I believe some if not all non-substrate fertilizers will also
> lower the pH (they contain nitric acid, NO3), and certainly, if you're
> growing low-light plants in a low-light environment, you do not need to
> fertilize at all, at least in my experience.

Hmmm.  I don't recall that any of the commercial aquarium fertilizers
contained nitrate.  Even if they did, it's unlikely that they would
contain nitric acid -- potassium nitrate would be a more reasonable
source.  Under any condition, nitrate (NO3-) does not lower the pH.

Roger Miller