NO3 level and growth of aquatic plant ref: Paul Krombholz 1966

In article . com,
wrote:
There are no known detrimental effects on plants at extreme levels(NH4
is quite another matter), fish and the most sensitive will be Amano
shrimps etc.

I used these shrimp in a toxicity study, I found no adversed effects
at 160ppm(the limit of the test method, it was likely higher). No fish
or plant impacts where noted. I used KNO3 to dose, as did Paul.

I slipped a decimal once and dosed at 200 ppm of know instead of 20.

I let it go for 3 weeks to see what would happen. The tips of a couple
of crypts curled a little bit but the 16 ammano shrimp were unaffected.

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