Page 66 - Koi Net - On-Line Koi Magazine - Issue 94

THE SCHOOL OF KOI:

EVERYTHING ABOUT

NITROGEN PART 7

Koen Gevers of ‘The School of Koi’ YouTube
channel shares various aspects of keeping
Koi he has built up over the years.

Koen Gevers continues his series of articles for both
new and experienced Koi keepers. Which he hopes will
provide useful knowledge for Koi keepers worldwide.
In our previous and following articles, an in depth
detailed story, (nearly) everything there is to know about
Nitrogen and its relation to keeping Koi will be
explained.

Everything about N(itrogen) – Part 5
In the last article I discussed the options on how
Nitrogen can be introduced into the pond which really
mainly is through the food pellets we throw in. I also
explained the most common routes on how the
Ammonia is broken down. Besides these there are
two routes that do not involve oxygen intake. There
are 2 main processes that could happen namely
anammox and denitrification, besides the conversion
of nitrate back to nitrite, all of them without oxygen
addition. Denitrification is done by bacteria that
directly degrade Nitrite into nitrogen gas (see Table 1,
Route 7) and the Anammox route is discussed earlier
in previous Koi Net issues (see Table 1, Route 9). The
reaction equation can be seen in Table 1. No oxygen
is needed for this.

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