Eudrakon P phosphate fertiliser
€7.40
In stock, lead time: 1-4 days
Phosphate additive fertiliser
In contrast to the majority of other aquariums, some heavily planted and illuminated tanks with moderate to low fish populations require a supplement with the basic nutrient phosphorus - P or phosphate - PO.4.
Composition
Contains potassium dihydrogen phosphate (KH2PO4)
Dosage
1 ml added to 50 litres of aquarium water increases the phosphate content by 0.1 mg/l
The target value is in the range of 0.1 - 0.2 mg/l phosphate. More is rarely necessary and usually only promotes algae growth unnecessarily.
(At the same time, the salt used reduces the potassium content by a slight 0.04 mg/l increased)
Phosphate can also be added as a top dressing. To ~ 0.25 mg/l and only top up again when the level has been at zero for a while.
Aquatic plants are good at storing phosphate, and this method can be used to make life difficult for algae, which are not so good at storing phosphate due to their small size.
If the measured PO4-concentration in the aquarium water before using Eudrakon P has not been detectable for a long time, it is often the case that the first 7 - 14 days of use show a greatly increased consumption. This is normal and is due to the fact that, on the one hand, all plants replenish their depleted phosphate stores and, on the other hand, phosphate is fixed by adsorption on iron hydroxide precipitates in the filter and substrate.
Caution
Adsorber materials that are offered for silicic acid binding (SiO₂) always bind phosphate to a greater or lesser extent!
So if you want to permanently increase the phosphate content of your aquarium water, you have no choice but to remove such silicate adsorbers from the water cycle.
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1 - 10 by 39 Reviews
14 February 2026 07:45
Consiglio per mantenere ottime piante
Eudrakon P phosphate fertiliser | IMPLEMENTATION: Solution | AMOUNT: 1.0 Litre
Ottimo rapporto qualità prezzo,
19 December 2025 17:58
Fertilizzante top... Linea performante
Eudrakon P phosphate fertiliser | IMPLEMENTATION: Solution | AMOUNT: 5.0 Litres
Fertilizzante top...
Linea performante
6 February 2025 08:52
DRAK has been my choice since NewsGroup times...
Eudrakon P phosphate fertiliser | IMPLEMENTATION: Solution | AMOUNT: 0.25 Litres
Here in the tanks, phosphate is always close to zero.
I always use the P as a shock fertiliser directly after the fortnightly water change, 1ml/50 litres.
To dissolve the Eudrakon P powder, I add 7g to one litre of water.
It dissolves quite well, I use water heated to 80°C.
29 October 2024 00:00
Ideal for PO4 deficiency
Eudrakon P phosphate fertiliser | AMOUNT: 1.0 Litre | IMPLEMENTATION: Refill pack
Ideal for PO4 deficiency, which is often the case with me despite intensive feeding.
29 August 2024 00:00
Valuation without text
Eudrakon P phosphate fertiliser | AMOUNT: 1.0 Litre | IMPLEMENTATION: Refill pack
Valuation without text
27 June 2024 00:00
Valuation without text
Eudrakon P phosphate fertiliser | AMOUNT: 1.0 Litre | IMPLEMENTATION: Refill pack
Valuation without text
27 July 2022 21:47
I have been using the fertiliser for several years and am very satisfied
Eudrakon P phosphate fertiliser
It works exactly how you want it to. I would order the product again at any time
1 July 2022 22:18
Never again without Kremser fertiliser
Eudrakon P phosphate fertiliser
Thanks to a recommendation, I bought my fertiliser here and optimised my aquarium with a dosing pump. It has never been so beautiful :-)
Both the ready-made fertiliser and the powder for mixing yourself are highly recommended. Many thanks for the great products!
14 June 2022 08:27
Here too: Recommend powder, inexpensive and lasts forever
Eudrakon P phosphate fertiliser
For shock fertilisation in the event of phosphate deficiency.
Depending on the feed, this can sometimes occur, especially in summer when live food and very little frozen food is on the menu.
14 July 2021 15:07
Good fertiliser
Eudrakon P phosphate fertiliser
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Roots conquer the forest
Some photos from the aquarium of Wilm Thiere from Braunsdorf
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