Ferrdrakon K

Full Potassium Fertilizer

Area of Application

For strongly planted and strongly lighted pools, potassium can be a limiting factor, as many plants take-up much more potassium than they need.

Some plants react very sensitively to a lack of potassium (e.g. Alternanthera [parrot leaf] - and Ammania [Cognac plant] - species). The symptoms are sudden growth standstill and crippled new leaf growth.
Here the basic fertilizing with Ferrdrakon can be supplemented using Ferrdrakon K that has a higher content of potassium, more magnesium and some calcium.
The content from iron, manganese and other trace elements must be reduced by half compared with Ferrdrakon, because the solubility of the potassium salts is too small, to obtain the desired relationship between potassium, iron and the other trace elements without having to make compromises.

Pharmaceutical Form

Ready solution - Powder mixture

The two pharmaceutical forms offered differ in their composition only very slightly. The prescribed amount of fertilizer material and trace elements are in both preparations present to almost exactly the same extent.

The powder mixture must first be dissolved in the defined amount of water (see directions). The solution form is, in comparison, available for immediate use.

Dosage

Ferrdrakon K should always only replace a part of the Ferrdrakon dosage. One starts at the calculated or recommended dosage of Ferrdrakon and replaces a part with the double amount of Ferrdrakon K. By using it on its own, the potassium dosage in practically every case would be too high.

For the replaced part the potassium and magnesium dosage is 20 times higher than before.

One should start only with a small part (a sensible amount would be 20 - 30 %) of the Ferrdrakon dose, replaced with Ferrdrakon K and the replaced part should be only slowly increased. The effect should be observed: When there is no more growth improvement and/or problems with algae begin, one must reduce the replaced part-dosage again.

Using a daily dosage is preferred, to avoid a sudden weekly “step-increase” in the concentration of potassium, which can in turn lead to increased algae growth.
Ausnahmsweise kann man bei ansonsten täglicher Düngung bei größeren Wasserwechseln das Frischwasser mit der halben Dosis (10 ml / 100 l Frischwasser) direkt aufdüngen.

A pre-requisite for this is that a minimum of 25% exchange of water takes place every 2 weeks. Of course a greater water exchange does no harm rather is quite a sensible move. In this connection may we remind you of the old proverb: “The best filter is the bucket of water belonging to the aquarium keeper!”.

Optimum iron content: 0.05 - 0.1 mg/l
Optimum potassium content: ~ 10 - 15 mg/l

Storage Life

• Solution: Store in a dark cool place (the metal chelate complexes are sensitive to UV light) - minimum storage life 2 years.
• Powder mixture: Store in a dark and dry place (avoid humidity) - the storage time is practically speaking almost unlimited.

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.

In order to avoid the possibility of befall of the mixture with either fungus or bacteria a harmless and well tolerated conservation agent has been added (methyl paraben).

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