Ammonia for Plants
---------- Forwarded message ----------
From: Tim Mullins <tmullins at telerama_lm.com>
To: Aquatic Plants <Aquatic-Plants at ActWin_com>
Subject: Ammonia for Plants
I recently discovered my tank has been N limited. My NH4, NO2, and NO3
have always been unmeasurable ,and, when I added some ammonia, things
really greened up. So, some thoughts and questions:
- I'm using ammonia rather than some NO3 compound because the "Optimal
Aquarium" suggests some plants (like Cryptos) can't use NO3. True?
- I'm using household ammonia, 4% NH4-OH, a strong hydroxide. Is this ok
in my 6.8pH, carbonate hardness buffered, CO2 injected water? (Most
ammonia should go to ammonium, pH stays constant during dose).
- 4% HH4-OH is about 2% NH4. So, 20g/ltr is 20mg/ml. A half mg daily dose
into a 160 ltr water column is about .063 mg/ltr concentration max
(ammonia is undetectable at days end). That's ok for fish, true?
- I was cautioned against using NH4-NO3 with fish. Does this stuff have a
negative beyond ammonia introduction?
Many Thanks for any thoughts,
Tim - Pittsburgh