JBL ProScape NPK Macroelements

JBL ProScape NPK Macroelements

  • For all aquarium with less livestock
  • Perfect for aquascapes
  • Contains nitrate, phosphate, potassium and magnesium
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Healthy plant growth is based on the following three main pillars: A supply of light, a supply of CO2 and an adequate/optimal supply of mineral nutrients. The supply of nutrients is described by Liebig's law of the minimum. According to this concept, the nutrient which is available in the minimum amount limits the growth of plants regardless of whether it is a microelement or a macroelement. Microelements are trace elements which plants need in small amounts, whereas macroelements are used for growth in larger amounts.

In a well-planted aquarium, both microelements and macroelements are consumed in large amounts. Particularly when the fish population is small, the microelements, as well as the macroelements of nitrogen, phosphorous and potassium, quickly drop down to the minimum.

The macroelements can easily be supplied by using JBL ProScape NPK Macroelements or by adding each of the individual components, nitrogen, phosphorous, potassium and magnesium, separately. If the latter procedure is selected, it is recommended to check the water values with the JBL Test Set each time.

Nitrogen in the form of oxygen compounds (NOx) or hydrogen compounds (amines - NH2) have essential functions in an organism, such as in protein metabolism. Whereas it is more common to find an excess of nitrates and phosphates in aquariums with larger fish populations which, in turn, can lead to algae growth, nitrates are often in scarce supply in planted aquariums due to consumption by the aquatic plants. This limits growth in the tank. As the concentrations of nitrates and phosphates in the drinking waters usually used in aquariums vary considerably, depending on the water supplier, it is advisable to use JBL PO4 Test Set and JBL NO3 Test Set to determine the current phosphate concentration and nitrate concentration of the water before adding the JBL ProScape NPK Macroelements.

JBL ProScape NPK Macroelements supplies the tank water with nitrogen and phosphorus in the form of nitrate salts and water-soluble phosphate salts. As a result, the aquatic plants obtain the supply of nitrogen they require. Potassium and magnesium are also added to the water at the same time.


  • For all aquariums with low fish population, such as nano aquariums and aquascaping aquariums.
  • Contains nitrogen (as nitrate), phosphorus (as phosphate) and potassium as well as magnesium for a targeted increase of these values.
  • The use of a fertilizer, such as JBL Ferropol or JBL ProScape Fe +Microelements might be preferable in aquariums with higher fish population.
  • Contains a 2 ml dispenser.


Dosage per 100 Liter
Well lit tank (1 Watt per Liter) + CO2 6 ml daily
Low light (less than 0,5 Watt per Liter) + CO2 2 ml daily
Without CO2 2 ml per week

The normal dosage is 5 ml / 100 l of water for a very well-lit tank with >= 1 W / l of illumination and 1 ml/100 l of water for a tank that is not as well lit. The supply of carbon dioxide must also be considered.

The above table shows recommended fertiliser concentrations according to the general conditions of the aquarium.

As actual precise consumption cannot be predicted, we recommend regularly checking the nitrate concentration and phosphate concentration with JBL NO3 Test Set or JBL PO4 Test Set, especially prior to each follow-up dose. If the measured phosphate levels and nitrate levels of the tank water are outside the above-mentioned range, it is advisable to use the single-component fertilisers, JBL ProScape N Macroelements, JBL ProScape P Macroelements, JBL ProScape K Macroelements and JBL ProScape Mg Macroelements.

5 ml JBL - ProScape NPK Macroelements in 100 l yelds a concentration of:
NO3 2,5 mg/l
PO4 0,1 mg/l
K 1,5 mg/l
Mg 0,05 mg/l



JBL is a traditional German company with a very wide range of products for aquarists. From high-quality fish and shrimp food to external filters and water plant fertiliser, JBL offers a wide selection for aquarium enthusiasts.

JBL's research and development constantly brings new, innovative products onto the market. Whether aquascape, fish aquarium, shrimp tank with a scurry factor or a pure water plant aquarium in Holland style, JBL offers suitable aids for set-up and maintenance for all these directions.

General information

Item no.
EAN 4014162211149
Weight 0,39 kg
Shipping weight 0,50 kg

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This item has been rated 5 out of 5 stars
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Arttu-Tapio P.
This is a must have. Even tho you dont know about plants.
28th January 2022
JBL - ProScape - NPK Macroelements - 500 ml
JBL - ProScape - NPK Macroelements - 500 ml

You cannot go wrong with this. Been using this as long at is has been on market and always got good results with it. Most of the time this is my only plant fert. (read more)