Quote:
Originally Posted by redlobstor
Thank you Twinfallz for the correction. Its what happens when one reads too fast.
Yes the percentages were different for each farm but they were consistent from day and night for each, if that makes sense.
Jason
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I run a scrubber that grows a species of ulva, so i was interested in the observation that ammonium uptake occured during darkness.
Found this -
Ulva efficiently removed up to 85% of the ammonium from fish pond wastewater in darkness or light independently of temperature fluctuations.
https://link.springer.com/article/10.1007/BF02180927
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"A preference for amrnonium over nitrate has also been observed in other subinerged macro-phytes, such as Ceratophyllum demersum (Toetz,1971) and Myriophyllum spicatum (Nichols &Keeney, 1976b). In C demersum, nitrate uptake has been found to correlate with light intensity,practically ceasing in the dark, while ammonium uptake was continuous and decreased only slight-ly at night (Toetz, 1971)"