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Re: All lies :)
Aquatic Plants Digest wrote:
> > Something is using up
> > the NO3 because the test detected less than 5 mg/l. So I added another 1/4
> > tsp KNO3 to get between 5 to 10 mg/l of N03.
> This is clear evidence of plant useage.
Well, almost. Don't forget about denitrification. There are cases
where denitrification can consume a pretty large amount of nitrate. In
that case there can be declines in nitrate concentrations without much
I have problems explaining how denitrification might work at a
signficant rate in a water column-fertilized planted tank, especially in
a new tank. Just the same, I think some of the reported nitrogen use
rates would required truely huge plant growth rates (or nitrogen
accumulation rates) unless some of that nitrate is consumed through