[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[APD] Re: Hypo for chloramine
> Thanks for the info albeit flaming. I always thought that ammonia being
Correcting someone who is giving dangerous misinformation is not
> I always thought that ammonia being freed was so low it was
EPA Guidelines set a maximum allowed level of Chlorine of 4ppm.
Most water supplies target 2-4 ppm Chlorine. Note that 4ppm
of Chlorine is actually 5.8ppm Chloramine. (The Chlorine is
69% of the chloramine molecule, ammonia is the other 31%)
So, with a possible 5.8ppm Chloramine, you have 4ppm Chlorine,
and 1.8ppm ammonia.
Assuming a 100 Liter tank (about 26g):
If you do a 10% water change, you would end up with .18ppm ammonia.
A 25% water change gives you .36ppm ammonia.
Ammonia toxicity varies based on pH and Temperature, but
in my book anything more than 0.1ppm ammonia is too much.
From a 1995 post here by Neil Frank:
"Then, it follows that short-term concentrations of total ammonia
should not exceed 0.1 mg/l and longer term (4-day average)
concentrations should be less than 0.02 mg/l."
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com