Ferrdrakon Full Iron Fertilizer
Our aquarium complete fertilizer provides aquarium plants with important nutrients and supports vital growth. It is a good idea to buy an iron fertilizer to provide a basic supply for the aquarium plants. Fertilising the aquaria also ensures a particularly intense colouring of the leaves.
All advantages at a glance:
- Iron fertilizer as basic supply for aquarium plants
- Contains all essential nutrients
- Supports vital growth
- Intensive leaf colouring
- Less algae formation
Ferrdrakon full iron fertilizer as ready-to-use solution or as refill pack
Ferrdrakon complete iron fertilizer serves as a basis for fertilizing a normally planted tank without any other special features. The complete aquarium fertilizer contains all important and essential nutrients.
For fertilizing the water plants, however, supplementary fertilizer products such as Eudrakon N and Eudrakon P can be added to supplement the fertilization with macronutrients such as nitrate or phosphate as needed.
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, a special fertilizer such as Daydrakon or Ferrdrakon K should be used in addition to the complete aquarium fertilizer.
Iron fertilizer for the aquarium - Ingredients [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*, methyl paraben, ascorbic acid
* Please note package information
Weekly addition of Ferrdrakon at recommended dosage
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 l tank water each week (± 50 % depending on the plant growth)
Adding 1/7 of this calculated amount each day is beneficial.
When fertilizing the aquarium plants, start with the lowest possible dosage and increase slowly. The effect should be observed: if no improvement in growth can be observed or problems with algae occur, the dose should be reduced immediately.
A pre-requisite for this is that a minimum of 25% of the water is exchanged every 2 weeks. A greater exchange of water does no harm, rather is quite a sensible move.
Ideal iron content
0.05 - 0.1 mg/l
Storage Life
Store in a dark cool place (the metal chelate complexes are sensitive to light) - minimum storage life please see database.
The solution that is delivered normally has a light yellow to dark brown colour. After the entry of air, some time later, it can cause the colour to change to dark brown or eventually green-black, but it always remains clear. The effectiveness of the fertilizer is however not affected in any way by this colour change process.
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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
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