Ferrdrakon Full Iron Fertilizer
Our complete aquarium fertiliser provides aquarium plants with important nutrients and supports vital growth. It is a good idea to buy an iron fertiliser to ensure a basic supply for the aquarium plants. Fertilising the aquarium also ensures a particularly intense colouring of the leaves.
All the advantages at a glance:
- Iron fertiliser as a basic supply for aquarium plants
- Contains all essential nutrients
- Supports vital growth
- Intense leaf colouring
- Less algae formation
Ferrdrakon complete iron fertiliser as a ready-to-use solution or as a refill pack
Ferrdrakon complete iron fertiliser serves as the basis for fertilising a normally planted tank without any other special features. The complete aquarium fertiliser contains all the important and essential nutrients.
To fertilise aquatic plants, however, supplementary fertiliser products such as Eudrakon N and Eudrakon P can be added to supplement the fertilisation with macronutrients such as nitrate or phosphate if required.
Extremely strong lighting and very dense planting produce strong plant growth. This and trickle filters or UV water clarifiers cause an increased consumption of certain micronutrients. In this case, in addition to the complete aquarium fertiliser, a special fertiliser such as Daydrakon or Ferrdrakon K should also be used.
Iron fertiliser for the aquarium - composition [in mg/L]
Potassium 3,000, iron 1,000, magnesium 750, manganese 400, boron 60, copper 20, molybdenum 20, zinc 20, cobalt 10, nickel 10, iodide 4.6, EDTA, HEEDTA, DTPA, NTA or IDHA*, methylparaben, ascorbic acid
* Please observe the package information.
Weekly addition of Ferrdrakon at recommended dosage [in µg/l]
Potassium 300, iron 100, magnesium 75, manganese 40, boron 6, copper 2, molybdenum 2, zinc 2, nickel 1, cobalt 1, iodide 0.46
Dosage
10 ml per 100 litres of aquarium water every week (± 50 % depending on plant growth)
A daily addition of 1/7 of the amount calculated in this way is advantageous.
When fertilising aquarium plants, start with the lowest possible dosage and only increase slowly. The effect should be monitored: if no further improvement in growth can be observed or problems with algae occur, the dose should be reduced again.
A minimum water change of 25 % every 2 weeks is a prerequisite. More is not harmful, but makes a lot of sense.
Optimum iron content
0.05 - 0.1 mg/litre
Shelf life
Store in a dark and cool place (the metal chelate complexes are sensitive to light) see database.
The delivered solution usually has a light yellow to dark brown colour. Some time after exposure to air, the colour can deepen to a deep brown or greenish black, but always remains clear. The effect of the fertiliser remains unchanged.
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71101 Schönaich
Germany
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1 - 10 of 262 reviews
26 December 2025 16:05
A fertiliser whose ingredients are comprehensively declared and whose effect is very well described.
I deliberately chose this fertiliser because I am convinced that a lot of research work has been invested in the mode of action and the composition of the individual ingredients. The background information on the individual components is exemplary.
I simply lack confidence in large, well-known manufacturers who probably produce hectolitres of fertiliser abroad, which also applies to fish food.
What counts for me is quality, not price. I have already observed an improvement in the growth of echinodors in a 1000 litre tank, but not yet in another tank.
However, as plant growth depends on many different factors, it simply takes more time to evaluate the fertiliser conclusively.
29 October 2025 14:40
Sustainable packaging
A great product that can be used so sustainably.
29 October 2025 14:39
Top product
Very good quality, a really great product
29 September 2025 16:18
Best fertiliser
Best fertiliser I have tried in all these years.
14 April 2025 00:00
Fertiliser in powder form for 1 litre
Fertiliser in powder form for 1 litre of water. Why pay for expensive packaging and water? I've been buying it for years and am very happy with it.
28 January 2025 00:00
Have been using for decades...
I have been using Ferrdrakon together with Ferrdrakon K for decades and am still convinced.
30 October 2024 00:00
Good plant growth
Good plant growth
22 September 2024 10:00
Top fertiliser
I had problems with algae for years, the plant growth was sparse, I have been using Ferrdrakon for 1 year, 15 ml per 200 litres of water per week, my echis thank me with good growth and lush green leaves. 5 stars from me.
10 September 2024 00:00
Good fertiliser
Good fertiliser that does what it should.
29 August 2024 00:00
Valuation without text
Valuation without text
Great pictures from the plant tank of A.L. from Eckenhaid near Nuremberg
This is how you can have a good time as a redfin tetra!
Some photos from the aquarium of Wilm Thiere from Braunsdorf
The aquarium of S.L. from Saarbrücken
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