Eudrakon N Nitrogen Fertilizer Solution

Ingredients of Eudrakon N

This fertilizer consists of 3 components ensuring a multilayer nitrogen supply:

  • Nitrate
  • Urea resp. Carbamide
  • Ammonium

Ammonium is absorbed instantly and mainly by water plants, but on the other hand, it can not be stored. Due to energetic reasons, it is slightly easier to absorp ammonium than nitrate. But higher nitrate concentrations diminish the ammonium absorption (from approx. 5 mg/l nitrate).
Excess ammonium is quickly oxidized by oxygen consumption into nitrate by nitrifying bacteria. Therefore the fertilizer has a relatively low amount which also helps to avoid toxic ammonia when the pH-value rises above 7.5.

Here, the second content, urea is able to resolve the problem. Urea, a nitrogenous end product of the nitrate metabolism of many animals, can be directly absorbed by plants on the one hand or also hydrolyzed by the bacteria in the tank into ammonium and CO₂.

Nitrates are non-poisonous for animals with all common pH-values and therefore also used as a “storage” here.
Some plants may react with disturbances of growth when a nitrate-rate of 10 mg/l occurs. Therefore, this rate does not need to and should not be exceeded.

A part of the nitrate is added in form of its potassium and magnesium salts, as not only potassium, but also magnesium is consumed in quantity in pools that use a lot of nitrogen.


Daily max. 1 ml per 50 l tank water until the requested nitrate concentration is reached.

The optimal concentration is about 3 - 8 mg/l nitrate. Any more is not necessary and only supports the growth of algae.

When no absorption takes place by the plants and there is a complete mineralization, a dosage of 1 ml to 50 l water corresponds to a direct dosage of 2 mg/l nitrate, 0.4 mg/l potassium and 0.1 mg/l magnesium.


6.8 % nitrate, 2.02 % potassium, 1,0 % urea, 0.48 % magnesium, 0.34 % ammonium, methyl paraben, EDTA

10 of 35 reviews

4.94 out of 5 stars






Leave a review!

Share your experiences with other customers.

21 February 2017 20:02

wichtiger Makronährstoff, der ...

wichtiger Makronährstoff, der bei Unterversorgung zu massiven Wachstumsstörungen der Pflanzen führen kann (Achtung: Wassertest ist unverzichtbar!)

13 February 2013 10:58

gut und effektiv...

gut und effektiv

1 November 2014 10:06

Das Produkt wird täglich (ein ...

Das Produkt wird täglich (ein paar Tropfen) dosiert. Für jedes Pflanzenaquarium geeignet.

19 November 2014 08:21

Sehr gut...

Sehr gut

18 January 2015 20:03

Qualität top. Ohne Versandkost...

Qualität top. Ohne Versandkosten wäre es perfekt.

24 March 2015 08:54

Guter Dünger...

Guter Dünger

10 April 2015 06:53

Ergänzungsdünger nach TW-Analy...

Ergänzungsdünger nach TW-Analyse

27 May 2015 11:20

wie auf den Produkt angegeben ...

wie auf den Produkt angegeben und ich fahre gut damit

29 June 2015 21:16

Dosiere bisher sehr vorsichtig...

Dosiere bisher sehr vorsichtig. Langzeitwirkung noch nicht aussagekräftig. Schadet Garnelen nicht, sind alle putzmunter

14 June 2022 08:35

Reiner Stickstoffdünger, funktioniert! Danke Doc ;o)

Zur Nitratdüngung im schwach besetzten Aquarium. Ich filter lieber mit Siporax und dünge bei Bedarf ein wenig nach als dass ich ständig einen hohen Nitratgehalt mit Wasserwechsel bekämpfen muss. Das Leitungswasser hatte hier auch Früher bald 25mg NO3 wodurch das nicht wirklich half.(aktuell so um die 13mg)

Roots conquer the forest

When designing this aquarium, a friend's photo of a large root forming a kind of subway served as inspiration.

Some photos from the aquarium of Wilm Thiere from Braunsdorf

Wilm Thiere has always tried to recreate Amano's aquariums.

A gorgeous aquascape by Carlo Sette

A great aquascape about 5 months old by Carlo Sette in 120 × 45 × 45 cm, set up with Tropica Soil and lit 8 hours/day with a mix of Twinstar S3 and Juwel Helialux spectrum (LED - 170 W total).

Matteo Masotti's Plant Basin

A particularly beautiful plant pool in 120 × 40 cm mainly planted with the special aquatic plants from rareaquaticplants (Massimo Ianella).


1 ml Dispenser pump
For measuring fertilizer or adding water treatment

Programmable single-channel dispenser pump SD-01M
Programmable single-channel dispenser pump SD-01M (peristaltic pump) / 1 - 99 ml per dosing pulse / digital display

30 ml Canister pump
Dosing pump for 3 and 5 litre canisters

Metering valve with venting for canisters
With vent for 3 and 5 litre canisters

20 ml Dispensing Beaker for Screwing
Plain dispensing system (capacity max. 20 ml) for measuring the necessary amount of fertilizer or adding water treatment.


Similar Products

Eudrakon P Phosphate Fertilizer
For heavily planted and illuminated basins with low fish population.

Variants from €6.99*
Eudrakon N Power 100 - Permanent Nitrate Supply
The automatic source of nutrients for nitrate. Discharge time 2 months. Daily discharge 100 mg nitrate.

Eudrakon P Power Phosphate Fertilizer
The automatic source of nutrients for phosphate. Discharge time 2 months. Daily discharge 10 resp. 25 mg phosphate.

Variants from €9.99*
Ferrdrakon K Full Potassium Fertilizer
Very high concentration of potassium and magnesium

Variants from €10.90*

Checking water values

PRODACtest NO3 - Nitrate test
Water test to determine the nitrate concentration (NO3). Suitable for fresh and sea water.

PRODACtest NO2 - Nitrite
Nitrite concentration detection. For Fresh & Seawater. Max. 60 tests possible.


Enquiry form

Send us an e-mail. We look forward to hearing from you.

Request form
Fields marked with asterisks (*) are required.
Thank you for your enquiry. We have received your enquiry and will get in touch with you as soon as possible.