Do you happen to know the date that this article was published?
Not only does the author contradict himself within the article, but many of his statements are completely outdated with more recent research reaching different conclusions.
thank you so much for your input. it seemed scholarly from my limited experience.
it appears the article was published in 2010.
can you direct us to other articles outlining the effects of winters onset through spring in the detail that was presented?
it would be greatly appreciated.
I noticed yesterday while looking at my pond that the fish have already stripped the liner clean of all the good muck they like to eat over winter .I feed depending on water temps. and we don't get that cold and pond is near septic tank so it gets heat from it .I guess feeding depends on where you live and what the winters are like from one year to the next .Last year was a mild winter for most of us and then around Feb. we paid for the mild winter .Not sure what this winter will be like .
Yet in the very next section, the author starts to refute this statement with:
"At 62 degrees, the activity of the nitrosomonas bacteria begins to reduce significantly. The effect of this, of course, is a reduced ability for the filter system to manage the conversion of ammonia to nitrites,....."
"At 55 degrees, the nitrifying bacteria in our filters begin to die off as well, although they will not be completely gone until about 42 degrees F. The effect of this is that our filters begin to loose the ability to eliminate nitrites."
Both assertions can not be correct. But which one is the correct statement? How is the hobbyist reader to know? The author does not cite any sources for his information. If he did, even he might have seen the contradiction and performed the necessary editing before publishing this article.
Arguing for the sake of arguing... Nitrosomonas bacteria is not the same as Nitrifying bacteria and they can survive different temperature ranges is what is sounds like in those two statements.
Where did you read that?
Nitrosomonas is a nitrifying bacteria along with Nitrospira, Nitrobacter, Nitrospina, Nitrosococcus, and Nitrotoga among others. Each has its preference of temperature. Some continue to oxidize at a temperatures of 5C, Nitrotoga as low as 1C.
Well that's interesting then.. may be he believes that most of the Ammonia to nitrites stop at 62F and most nitrites to nitrates at 55F? I wont claim knowledge of these types of bacteria... that's just how i read what he said.
I actually believe that the author did a 'copy and paste' on much of this article.
The statement concerning bacteria in WWTP (Waste Water Treatment Plants) is correct. These facilities must be able to operate year-round. The simple fact that they are able to do this proves that nitrifying bacteria function at extremely low temperatures. Granted their efficiency at oxidizing Ammonia and Nitrite is greatly reduced but they will still function at 5% to 20% efficiency at temperatures as low as 5C.
This chart displays how this is fairly constant regardless of environment.
View attachment 95792
Considering the fact that Ammonia production is also severely reduced at these temperatures Ammonia and Nitrite build-up is not likely to occur.
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