Ferrdrakon Full Iron Fertilizer

Our aquarium complete fertiliser 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 + 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


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

Application note

Before use, please dissolve the content as follows: guide

Fertilizer powder weighing

13.9 g

Production as of 11/21 with IDHA: 14.6 g

Storage Life

Store in a dark and dry place (avoid humidity) - the storage time is practically speaking almost unlimited.

The self-prepared solution normally has a light yellow 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.

10 of 259 reviews

4.93 out of 5 stars






Leave a review!

Share your experiences with other customers.

2 - 10 of 109 reviews

15 July 2014 14:18

Sehr guter Dünger, meine Pflan...

Sehr guter Dünger, meine Pflanzen danken es mir, das ich ihn benutze.

30 August 2014 15:59

Ich verwende Ferrdrakon zur Dü...

Ich verwende Ferrdrakon zur Düngung meiner Wasserpflanzen.

13 August 2014 23:54

Das Produkt ist 1A verwende nu...

Das Produkt ist 1A verwende nur noch Eisendünger von Drak. Alle Pflanzen sind knallgrün.

13 August 2014 23:42

Erstklassiges Produkt!!! Me...

Erstklassiges Produkt!!! Mein Aquarium blüht wahnsinnig auf und kann diesen Dünger jedem empfehlen, der richtig gesunde Pflanzen mag. TOP .. bitte weiter so!

3 August 2014 00:23

Die Gebrauchsanweisung beherzi...

Die Gebrauchsanweisung beherzigen und den Pflanzen geht es gut. Es wurden schon etliche Düngemittel von mir benutzt. Keines erreicht dieses Level. Merci.

22 July 2014 09:20

ich dünge anteilig täglich die...

ich dünge anteilig täglich die wöchentliche Dosis und bin damit sehr zufrieden

16 July 2014 16:00

wie versprochen super...

wie versprochen super

16 July 2014 14:14

Diesen Dünger verwende ich als...

Diesen Dünger verwende ich als Tagesdünger - Pflanzen, Fischen und meinen Wirbellosen geht es prima :o)

30 May 2014 13:55

Ich benutze es seid einigen Ja...

Ich benutze es seid einigen Jahren in meinem Becken und der Pflanzenwuchs ist unschlagbar. Da ich jetzt mehr wert Lege auf ein dicht bepflanztes Becken und das mein neues Projekt ist bin ich auf Kramerdrak umgestiegen.

31 May 2014 00:51

Benutze den Dünger seit vielen...

Benutze den Dünger seit vielen Jahren sehr erfolgreich

Great pictures from the plant tank of A.L. from Eckenhaid near Nuremberg

The tank, which is currently just under nine months old, was switched to DRAK almost two months ago. With the fertiliser combination KramerDrak Power and KramerDrak solution as well as good lighting, it needs regular thinning out.

This is how you can have a good time as a redfin tetra!

The photo was given to me by our customer Peter H. with the comment: “No questions or problems this time, just a photo. :-)”

Some photos from the aquarium of Wilm Thiere from Braunsdorf

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


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

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

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

Sold out
PRODACtest Fe - Iron
Water test kit for measuring the iron concentration (Fe). Suitable for fresh and marine water. Allows up to 63 tests.

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


Similar Products

KramerDrak Special Iron Complete Fertilizer for Strong Light Tanks
Special Full Iron Fertilizer for intensively cultivated plant tanks, strong light and very densely planted tanks. Developed by Hans-Georg Kramer.

Variants from €10.90*
Ferrdrakon BIO Water Plant Fertilizer
Full Iron Fertilizer with completely biodegradable chelator. As ready-to-use solution and in refill packs.

Variants from €8.95*
Daydrakon Daily & Iron Fertilizer
For high iron demand due to trickle filters, water clarifiers or plant growth

Variants from €8.95*
Ferrdrakon K Full Potassium Fertilizer
Very high concentration of potassium and magnesium

Variants from €10.90*

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.