Hydro A&B (Plagron) 2 x 1 liter

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Growing large, strong plants with minimal risk of mold, disease, or pests? Go for hydroponic growing! Cannabis plants can be grown completely without soil, with their roots constantly in water. This results in strong, bizarre-looking roots that can withstand a lot. But good cannabis nutrition is essential. That's why Plagron offers Hydro A+B, a two-component nutrient that you won't need anything else during the growth or flowering of your cannabis plant. Ready to try something new? Get off to a flying start in hydroponics with Hydro A+B. 1 liter per bottle and a 1:400 mixing ratio. You can go a long way with hydroponic growing! Read the detailed description for the benefits and instructions for use.

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Hydroponic Growing with Plagron Hydro A+B

Hydro A+B is a carefully formulated and highly concentrated nutrient, specially designed for cannabis plants in hydroponics. Grow hydroponically with this cannabis nutrient!

  • Suitable for both the growth and flowering stages of the plant
  • Do not use Plagron Hydro A and Hydro B separately
  • Together they form a complete nutrition for healthy and strong cannabis plants
  • Full control over EC and pH levels
  • Suitable for all inert substrates (clay pellets, rock wool, etc.)
  • The plant nutrient for hydroponic growing

What is Hydroponics?

Hydroponics is a method of growing plants in which their roots stand in water. Without soil. While every cannabis plant can be 'taught to swim,' it's important to train them from a young age. No kidding: start early with hydroponic growing so they develop roots suitable for this method. The roots of hydroponic plants look very different from those of soil-grown plants. This is because hydroponic roots develop to absorb sufficient oxygen. 

But what do you plant your plant in? Good hydroponic media include clay pellets (hydro pellets) and rock wool. They all offer an airy medium where roots can grow freely. Plagron Hydro A+B can be used in all inert media. Coconut fiber is less suitable because it is not completely inert. Still want to grow in coco? Choose Plagron Cocos A+B under 'Other customers also viewed.'

Why Hydroponics? The Advantages:

  • Nutrient delivery is simpler - hydroponic nutrients dissolve in water, making it easy for the plant to absorb them.
  • Most problems with cannabis plants originate from the soil and roots. Hydroponic plants are more resistant to mold, diseases, and pests.
  • Hydroponic plants can grow huge, provided that water management is optimal. This increases the potential yield.
  • Full control over EC and pH levels.
  • Nutrients are cost-effective because Plagron A+B is highly concentrated.

Hydroponics also has drawbacks. At first, it takes some getting used to the method and frequency of water and nutrient delivery. These need to be closely monitored - the roots must not dry out.

Nutrient Schedule Plagron Hydro A+B

Shake well before use. Add up to 2.5 ml of Hydro A per 1 liter of water (1:400). Use the same amount of Hydro B for each dosage of Hydro A, for a total of up to 5 ml per 1 liter of water. Use this combined nutrient solution at every watering.

Package Contents

Plagron Hydro A and Hydro B in two separate bottles. Each bottle contains 1 liter of Hydro A or Hydro B.

Ingredients of Plagron Hydro A+B

Hydro A: NPK* (3-0-1), Ca 4.2%, MgO 0.4% | Hydro B: NPK* (1-3-6), MgO 1.4%

* NPK stands for the ratio of nitrogen (N), phosphorus (P), and potassium (K).


For many years, Plagron has been producing a wide range of high-quality substrates, base nutrients, and additives. The company has been at the top of the plant nutrition market for 25 years. Plagron products are designed for all types of growers and guarantee excellent growing performance.

SKU B-2248-2249
Availability In Stock
Content 2 x 1 liter
Substrate / Medium Hydro / Aero
Suitable for organic grow? No
Composition Liquid
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