The New Generation of Plant Fertilizers

The new generation of highly concentrated liquid fertilizers from Metrop Biominerals can rightfully be called a new generation of plant nutrition.

The biomineral liquid fertilizers from Metrop are so enriched with NPK and microelements that the fertilizer looks like green yogurt.

The fertilizer is so versatile that it is suitable for all substrates.
These products are so concentrated that you need 5 to 10 times less fertilizer than usual.


Metrop MR1 is the Grow Fertilizer with NPK 10-40-20 + microelements.
Roots are the foundation. Phosphate is the main building block for roots, and a fertilizer with 40% phosphate is the best for root growth. This works only if the potassium content is much lower than phosphate.

Metrop MR2 is the Bloom Fertilizer with NPK 10-20-40 + microelements.

A fertilizer with 40% potassium ensures large buds!

As a rule, anything that must thicken inside the plant needs as much potassium as possible, while phosphate should remain lower. Maximum bud thickness is reached when potassium is twice the phosphate.
For these bloom fertilizers, use a maximum of 10ml per 10 liters of water.

Metrop Calgreen is the Calcium Nitrate Fertilizer.
Calcium is the fourth most important nutrient for a plant, and many regular fertilizers contain too little.
Calcium is crucial in the medium as it displaces ions, making many nutrients available to plants.
It also promotes the breakdown of organic matter, increasing nutrient availability and crop yield.

Calcium also binds acids that would harm the plant, including oxalic acid.

Calcium nitrate in combination with other elements (like Boron, converted to Vitamin B12) strengthens the plant cell walls, reduces risk of mold or rot, and increases final yield.

Metrop Calgreen is a unique biomineral product with highly concentrated calcium nitrate-protein along with boron, magnesium, and other trace elements.
Maximum 4ml per 10 liters of water.

High-quality raw materials are needed for such strong plant nutrients, and you can tell by the results! Microelements are also highly concentrated as they are important for plant control.

Using a liquid NPK high phosphate fertilizer and a high potassium fertilizer in combination with a liquid Calcium Nitrate Fertilizer gives the strongest harvest.

Metrop fertilizers are available in garden centers and hydroponic stores across Europe, the former Soviet Union, and parts of Asia, and are the most concentrated liquid fertilizers in the world.

They are also available in many other countries via the webshop. If your country is not listed but you are interested, send us a message.