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What Does the pH Value Mean?

What Does the pH Value Mean?

The pH value is a value for measuring the acidity of both soil and water. It is important to know the pH value, because every plant is different. Some plants need an acidic soil, whereas others don't.


The pH value is measured on a scale ranging from 1 to 14. A pH value of 7 is considered neutral. A lower value means the soil or water is acidic. The lower the pH value gets, the more acidic the soil or water will be. At a pH value of 7 or higher the soil or water is considered alkaline. This means there is a large amount of calcium in the soil or water. The higher the pH value gets, the more alkaline the soil or water will be.

The pH value of soil

The pH value of soil can be acidic, pH neutral or alkaline. How acidic the soil is depends on the amount of calcium in the soil. This is different for each kind of soil. For instance, sand and peat soils are generally more acidic than clay soil, since they contain less calcium. The pH value creates a balance in the soil by means of chemical processes. For proper functioning of the soil life that supports your plants, we recommend a soil pH value of 4.8 or higher. What the exact ideal pH value is depends on the substrate you're using:
  • 100% NATURAL: 5.5 - 7.0
  • 100% TERRA: 6.0
  • 100% COCO: 5.5
  • 100% HYDRO: 5.5
It is important to keep a good eye on the pH value. This is because not all nutrients are absorbed optimally at the same pH value. For measuring the pH value you can use a pH meter. Is the pH value too low? Then your plants may suffer from a magnesium deficiency. Soil life may also be inhibited. Is the pH value too high? Then your plants are at risk of multiple deficiencies. These include manganese, iron, boron, zinc and copper deficiencies. These deficiencies will result in a lower yield.


Influencing the pH value of soil

Is your ground too acidic? Then you could spread calcium. Spreading calcium leads to chemical reactions in the soil. These increase the pH value. You can also cultivate your soil. When doing this, air will be brought into the soil. This causes the built up carbon dioxide to escape easier. The soil can then dry up and fill the holes left behind by the carbon dioxide with air. Of course, we also offer a product that can help you out if your soil is too acidic. pH UP/DOWN Growth Technology helps you increase the pH value and also improves the structure of your soil. This causes nutrients in the soil to be better absorbed by your plants.

The pH value of water

Like the pH value of soil, the pH value of water is very important during growing. This is because a nutrient solution always needs to have the correct pH value. Only then will the plant receive its nutrients in the right amounts. When this happens your plants will grow quicker. Because of this, it is important to always keep an eye on the pH value of your nutrient solution. When the pH value is too low your plants may die because they do not get enough nutrients. When it is too high, algae may turn the water green. This too can cause your plants too die. The ideal pH value again depends on the substrate you're using. You can see the ideal pH values above. We offer products that can help you regulate the pH value in your nutrient solution.
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