Dennerle Plant Care N 250ml

Dennerle Plant Care N 250ml

  • Targeted supply of nitrogen
  • For demanding aquarium plants
  • For intensive leaf colouring
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Dennerle Plant Care N is a nitrogen fertiliser for demanding plant aquariums.
Plants need nitrogen to build numerous organic compounds, especially for the synthesis of vital amino acids. Amino acids are the building blocks of proteins and enzymes and have central functions in plant metabolism. Nitrogen is also needed for the formation of leaf green (chlorophyll). Plants can absorb nitrogen in various chemical forms, especially as ammonium, nitrate and urea. In the aquarium, nitrogen is primarily present as nitrate. Nitrate can be stored in the plant cells and transported within the plant. The addition of nitrogen is not necessary in normal, planted community aquariums, as it usually enters the aquarium in sufficient or often even too large quantities via the food.
In contrast, the situation is different for demanding plant aquariums (e.g. aquascaping aquariums, Holland aquariums). They have an above-average nutrient requirement, especially for macronutrients. This is due to the large proportion of aquatic plants and the low fish stocking in the aquarium.
In these types of aquariums, a nitrogen deficiency can quickly occur. In this case, the entire plant turns yellow or yellow-green. A deficiency first becomes apparent on the older leaves. They appear more yellow than the new ones, but do not usually die. In some plants, the leaves become glassy and almost transparent or turn slightly purple. Growth is clearly retarded. Inhibition of plant growth usually leads to algae problems.

For demanding plant aquariums, it therefore makes a lot of sense to keep an eye on the nitrate content and supplement it if necessary. Every aquarium has a specific nutrient consumption depending on the amount of plants, plant species, animal stocking, feeding, water changes and growth conditions (amount of light, lighting time, CO2 addition, filter technology, etc.). The required amount of Plant Care N fertiliser should therefore be determined individually for each aquarium.


  • Nitrogen fertiliser for heavily planted aquariums
  • For the targeted supply of nitrogen (nitrate = NO3)
  • For magnificent plants and intensely bright colours
  • High coverage due to concentrated active ingredients


The fertiliser can be dosed precisely and accurately: 1 ml per 100 l adds 1 mg/l nitrate. Plant Care N can be used as a weekly or daily fertiliser.


NK fertiliser solution 2 + 2,2
2 % N total nitrogen = nitrate nitrogen; 2,7 % K2O water-soluble potassium oxide
Net mass: See product packaging; Distributor: Dennerle GmbH, D-66981 Münchweiler, Germany

Ancillary components: 2,3 % Na water-soluble sodium, 1,15 % organic substance. Processing aids: For preservation: potassium sorbate. Application aids: colorant. Storage instructions: Store at room temperature. Protect from heat and frost. Keep out of reach of children and pets. Application specification: Only for fertilizing ornamental plants in aquaria. For detailed instructions for use and dosage, see package information. Note: Official advice is to take precedence over our information.



Dennerle has been operating in Vinnigen since its foundation in 1966 and, after more than 50 years of company history, the building blocks Dennerle relies on is experience. The philosophy behind Dennerle is to create a small and tangible, intact piece of nature, in harmony with the natural environment. That is why sustainability is a company-wide concept and is implemented at every possible point. In order to achieve an ecologically balanced aquarium, Dennerle relies on a system that is based on 5 pillars. Animals, plants, water, substrate and lighting. Dennerle offers the optimum equipment to bring this complex, but not complicated system into harmony.

General information

Item no.
EAN 4001615048162
Weight 0,27 kg
Shipping weight 0,30 kg

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