Eudrakon N - Nitrogen fertiliser solution
Composition of Eudrakon N
The fertiliser consists of 3 components to ensure a multi-layered nitrogen supply:
- Nitrate
- urea (urea or carbamide)
- Ammonium
Ammonium is absorbed immediately and preferentially by the plants, but cannot be stored. The uptake of ammonium is slightly favoured over the uptake of nitrate for energy reasons. However, higher nitrate concentrations inhibit ammonium uptake (from approx. 5 mg/l nitrate).
Excess ammonium is rapidly oxidised to nitrate by nitrifying bacteria using oxygen. For this reason, and to prevent toxic ammonia from forming in toxic quantities at pH values above 7.5, the relatively low proportion in the fertiliser solution was adjusted.
The second component, urea, is intended to provide a remedy here. Urea, as a nitrogenous end product of the nitrogen metabolism of many animals, can either be absorbed directly by the plants or is slowly hydrolysed by the bacteria in the tank to form ammonium and CO₂.
Nitrate is non-toxic to animals at all common aquarium pH values, even in relatively high concentrations, and is therefore used here as a "storage form".
However, some plants can react to nitrate levels of just over 10 mg/l with growth disorders, so this value need not and should not be exceeded as a rule.
Part of the nitrate is added in the form of potassium and magnesium salts, as potassium and magnesium are also heavily consumed in nitrogen-consuming tanks.
Dosage
Daily max. 1 ml per 50 litres of aquarium water until the desired nitrate concentration is reached.
The desired value is in the range of 3 - 8 mg/litre nitrate. More is rarely necessary and only unnecessarily promotes algae growth.
If there is no uptake by the plants and everything is completely mineralised, 1 ml per 50 l of water corresponds to a direct addition of 2 mg/l nitrate, 0.4 mg/l potassium and 0.1 mg/l magnesium.
Composition
6.8 % nitrate, 2.02 % potassium, 1.0 % urea, 0.48 % magnesium, 0.34 % ammonium, methylparaben, EDTA
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71101 Schönaich
Germany
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2 June 2025 00:00
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1 July 2022 22:20
Never again without Kremser fertiliser
Thanks to a recommendation, I bought my fertiliser here and optimised my aquarium with a dosing pump. It has never been so beautiful :-)
Both the ready-made fertiliser and the powder for mixing yourself are highly recommended. Many thanks for the great products!
14 June 2022 08:35
Pure nitrogen fertiliser, works! Thanks Doc ;o)
Regarding nitrate fertilisation in a sparsely stocked aquarium.
I prefer to filter with Siporax and add a little fertiliser if necessary rather than having to constantly combat high nitrate levels with water changes.
The tap water here used to have almost 25mg NO3, which didn't really help (currently around 13mg).
21 July 2021 22:00
Ottimo
Ottimo prodotto in quanto testato nella versione più piccola da 250 ml
9 January 2021 22:36
Best macro fertiliser
I have been using this fertiliser as my main fertiliser for many years and have achieved super plant growth with it.
31 March 2020 18:16
Water values can be set precisely...
Water values can be set with pinpoint accuracy. Super product.
20 March 2020 15:28
For nitrate deficiency
Can only recommend it.
18 September 2017 16:56
I also didn't have any nitrate...
I had also not been able to measure any nitrate value from the tank as none was measurable. But I had typical deficiency symptoms on the plants. Thanks to the N solution, I was able to remedy this easily and added a maximum of 1 ml per 50 litres as described in the instructions. Algae had no chance and plants were able to absorb/store the fertiliser without undesirable side effects (algae).
21 February 2017 20:02
Important macronutrient that ...
important macronutrient that can lead to massive growth disorders in plants if there is an undersupply (note: water test is essential!)
Roots conquer the forest
Some photos from the aquarium of Wilm Thiere from Braunsdorf
A gorgeous aquascape by Carlo Sette
Matteo Masotti's Plant Basin
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