Ferrdrakon Evolution - The intelligent fertiliser system
Automatic - Dynamic - Every day
Every aquarium is unique, just like its nutrient requirements. Whether aquascaping or East African cichlids, community or altwater tanks, the intelligent fertiliser system Ferrdrakon Evolution automatically adapts the dosage to the entire aquarium configuration. Factors such as planting, growth rate, lighting, stocking or filtration will not play a role in the future when adding fertiliser. This means that time-consuming water tests are no longer necessary.
Use
Please add the fertiliser sticks or nets to the fertilisers listed in the Ferrdrakon Evolution fertiliser calendar at the times indicated in the Ferrdrakon Evolution fertiliser calendar. Please always select the product variant first and then download the appropriate fertiliser calendar.
Contents
1 fertiliser net for tanks with a capacity of 10 to 30 litres
Fully chelated, slow-release complete iron-potassium fertiliser. Contains no nitrate and phosphate!
Fertiliser calendar
A fertiliser net is placed in the filter during the specified weeks. After the 4th or 5th addition, the nets inserted up to that point can be removed.
Scientific basis
It is a well-known phenomenon that even aquariums that are largely designed and set up in the same way can develop completely differently. These deviations can be observed even if the starting conditions of systems only differ in the sub-atomic range. Such structures are scientifically described and researched in chaos theory using so-called fractal functions.
Our (planted) aquariums are also such chaotic systems and follow fractal laws.
Thanks to intensive research on aquariums in recent years, we know that there are interactions between chaotic systems and the dosing of substances. These interactions can be calculated and predicted using fractal mathematics.
Consequences for the application
After analysing hundreds of series of measurements in fertilised and planted aquaria, our assumption has been confirmed. The temporal course of the concentration of aquatic plant fertilisers is neither uniform nor completely irregular, but follows seemingly chaotic fractal patterns.
Attempts to control the nutrient concentration by means of measurements and targeted fertiliser additions unfortunately do not achieve the desired result. Over time, the probability of rapid, unexpected changes in concentration increases. The individual measurement becomes increasingly less important. Instead of stabilising the concentration curve, the fertiliser concentration then tends to jump from one concentration extreme to another.
Instead, apply fertiliser at the precisely calculated times of the fertiliser calendar units of the Ferrdrakon Evolution fertiliser system into the tank at the precisely calculated times on the fertiliser calendar. This ensures that the nutrient concentrations always remain within the desired range despite all fluctuations. As the natural nutrient fluctuations have already been taken into account when calculating the addition times, the system no longer builds up as with feedback. The concentrations remain within the desired range.
More detailed information on this topic can be found in "Long-term stabilisation of water chemistry in freshwater and saltwater aquariums" by Phillip Mertens.
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1 - 10 of 19 reviews
9 December 2025 16:41
I will never use another fertiliser again
The best fertiliser I've had so far and I've had many, you can never fertilise with liquid fertiliser in such a balanced way and according to the needs of the plants.
Immediately had splendid plant growth.
29 October 2025 08:04
I have found my supplier for plant fertiliser
Top quality! My plants grow very luxuriantly and are constantly multiplying. The fast-growing plants have to be shortened or thinned out almost every week. The products from DRAK are a little more expensive, but in my opinion quality has its price.
12 October 2025 14:48
It couldn't be better!
I have struggled with the fertiliser for my 30 cube so far. I found the dosage and application difficult. After I discovered this product, everything is child's play. After just three weeks, the plants are really "fat" and super beautiful.
11 October 2025 08:04
It works !
I have been using this fertiliser system in my 300 L tank for over a year now and have never had such beautiful and healthy plants before. I have a heavily planted tank and everything works great. For me it is the only slow-release fertiliser that really makes sense and works, even if the price is not exactly cheap.
9 October 2024 00:00
I'm already using the 2nd delivery!
I'm already using the 2nd delivery! I have already given it a very positive rating!
9 October 2024 00:00
I am totally thrilled!
Have been using the product for 2 weeks now! I am totally thrilled!
My red lotus plant has never had so many and such large leaves as it does now. The leaves of the Amazonas have such a rich green colour! I've never had that before!
Another advantage: Simply place the sachets in the aquarium at the specified times and the fertilisation is completely done! The fertiliser sachet also takes care of the dosing!
Disadvantages: I haven't noticed any so far.
17 September 2024 00:00
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17 September 2024 00:00
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14 July 2024 00:00
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22 January 2024 05:52
I have been testing it for 3 months and it works great, but I use it together with the complete liquid iron fertiliser as I have a lot of large plants in the tank. I will continue to use it, even if it is expensive.
Very good fertiliser
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