Ferrdrakon BIO Water Plant Fertilizer

Ferrdrakon BIO Water Plant Fertilizer as ready-to-use solution or as refill pack

  • Environmentally friendly iron fertilizer for aquariums: Ferrdrakon BIO sets itself apart from conventional products as a complete iron fertilizer by using a fully biodegradable chelator, making it an environmentally conscious choice for your aquarium.
  • Optimum nutrient supply: Specially developed for the needs of aquarium plants, this iron fertilizer supplies your aquarium with essential micronutrients, supports healthy plant growth and promotes a vibrant ecosystem.
  • Stability under difficult light conditions: Ferrdrakon BIO remains stable even under intense blue light and UV radiation, making it the ideal iron fertilizer for heavily lit aquariums.
  • Simple and flexible dosing: The application of the iron fertilizer is simple and can be adjusted depending on the growth phase of the plants and the conditions in the aquarium.
  • For conscious aquarium enthusiasts: This iron fertilizer is perfect for aquarists who value natural and effective care for their underwater paradise.
  • Discover the benefits of Ferrdrakon BIO, your ideal iron fertilizer for the aquarium, and see your aquarium flourish!

Composition [in mg/l]

Potassium 4 000, Iron 1 300, Magnesium 1 000, Manganese 600, Boron 60, Copper 20, Molybdenum 20, Zinc 20, Cobalt 10, Nickel 10, Aluminium 8, Lithium 5, Tin 5, Vanadium 5, Chromium 3, IDHA, PAA, Benzoic acid, Citric acid

Dosage recommendation

2 - 4 times 5 ml per week and per 100 litres tank water content, depending on lighting, plant quantity and growth.

After setting up your aquarium, start fertilizing with 2 - 4 times 2 ml per 100 litres of water and slowly increase the dosage to the normal dose as the plants grow.
If you have already used another water plant fertilizer before Ferrdrakon BIO, you can also start directly with the normal dose.

To remove unused nutrients and excretions from fish and plants, we recommend a minimum water change of 25 % every 2 weeks. However, there is nothing wrong with more water changes.

Ideal iron content

0.05 - 0.1 mg/l (up to 0.2 mg/l with extremely strong lighting)

Operating range and storage life

Sufficient for 1 250 - 2 500 litres of water

Store in a dark and cool place please see database.

5 of 5 reviews

5 out of 5 stars






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26 August 2022 08:19

Die Pflanzen wachsen

Dünge zweimal die Woche (nach Empfehlung) und ich finde die Pflanzen wachsen besser

11 October 2022 00:11

Sehr empfehlenswert

Seit Jahrzehnten in Anwendung, immer noch gut.

18 November 2022 11:57

Zu diesem Dünger muss man eigentlich nichts mehr sagen. Sehr gutes Produkt.

Ich war von Ferrdrakon schon begeistert. Zum Bio Ferrdrakon habe ich gewechselt weil er etwas mehr K enthält. Aber beide Produkte geben meinem 500l Scape tolle, kräftig gefärbte Pflanzen.

23 May 2023 22:51

Sehr guter Dünger, Pflanzen wachsen wie verrückt und haben schöne, satte Farben!

Bin begeistert von dem Dünger und kann bestätigen das er sehr gut in Becken mit UVC- Klärer funktioniert!!

3 February 2024 16:49

Vom Biodünger begeistert !!

Ich habe zwar erst seit kurzem den Biodünger im Einsatz, kann aber jetzt schon feststellen das immer wieder kehrende Probleme bzgl.verkrüppelungen des Neuaustriebs diverser Pflanzen verschwunden sind. Bilde mir auch ein das der Fischbesatz agiler ist. Muss das alles natürlich noch längerfristig beobachten. Jetziger Stand : Ich bin begeistert


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

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


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