MasterLine II

MasterLine II

  • Macronutrient allround fertiliser
  • Contains nitrogen, phosphorus, potassium and magnesium
  • Daily or weekly dosing
  • Recommended use with MasterLine I and MasterLine Carbo
  • Available in 500 ml and 1000 ml
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MasterLine II is a concentrated macronutrient fertiliser for aquatic plants. It contains nitrogen, phosphorus, potassium and magnesium. It is recommended to use MasterLine II together with MasterLine I and MasterLine Carbo. In this way the aquatic plants have all the nutrients necessary for healthy growth. MasterLine II offers the possiblity of dosing on a weekly basis.


  • Available in 500 ml, 1.000 ml and 5.000 ml unit sizes
  • Contains nitrogen, phosphorus, potassium and magnesium
  • The full macronutrient supply
  • Daily or weekly dosage
  • Suppresses GSA, BGA and staghorn algae


Daily dosage
Lots of light (>0.5 Watt per litre) + CO2 1 ml per 30 litres*
Little light (<0.5 Watt per litre) + CO2 1 ml per 50 litres*
Weekly dosage
Lots of light (>0.5 Watt per litre) + CO2 7 ml per 30 litres*
Little light (<0.5 Watt per litre) + CO2 7 ml per 50 litres*

(*1 ml per 30 litres = 1.20 mg/l NO3, 0.2 mg/l PO4, 1.6 mg/l K, 0.12 mg/l Mg)

The recommended dosage is only a guideline. Depending on the aquarium, the dosage of the fertiliser can be reduced or increased to achieve optimum results.


Use in combination with activated carbon or UV lamps is not recommended, as the use of these substrates or tech can alter the nutrient properties. Shake bottle well before use. Store in a cool place without direct sunlight.



MasterLine was founded in 2016 out of passion for aquaristics, which has since become the brand's slogan. Masterline fertilisers contain a balanced mix of nutrients that are essential for the healthy growth of aquatic plants. The Masterline fertiliser system is designed to be particularly effortless to use and takes the user by the hand with a very simple concept. The specially calculated compositions provide the aquatic plants with all the necessary macro and micro nutrients and ensure good growth and vibrant colours.

General information

Item no.
EAN 9355478926132
Weight 1,20 kg
Shipping weight 1,60 kg

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roland k.
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20th August 2020
MasterLine - II - 500 ml
MasterLine - II - 500 ml

Sensational fertilizers!Even difficult to grow plants grow healthily and beautifully.A fertilizer worth its price in 100 percent,Ludwigia pantanal and eriocaulon love it for me. (read more)