Hydroponics is the growing of plants in soilless substrates such as rockwool, coco, expanded clay, perlite and other lifeless substances. Soil is replaced as the carrier of nutrients and moisture, and required nutrients and minerals are supplied via a nutrient solution. Another option is to do without substrates and let a nutrient solution constantly wash around the roots. This option gives the best results, but is only suitable for experienced growers, as hydroponic systems do not forgive mistakes (pH, ec-value, nutrient composition). The soil is missing as a buffer medium.
Here are some examples of hydroponic systems:
Pump-drip systems
Through so called Micro dripper or small holes in a thin plastic tube, small drops of nutrient solution constantly reach the plant directly. This keeps the substrate and root system perfectly moist at all times. Excess water flows back into the nutrient tank.
Pump rinsing systems
These are NFT or Ebb and flow tables. The roots are constantly washed around by a nutrient solution. This method guarantees the best possible yield and growth of the plants, as they are constantly supplied with nutrients. The roots must not get any light, the supply with fresh nutrient solution from the tank must be placed on one side, the removal of the water on the other side of the flood table.
Nutrient solution
There are ready-made nutrient solutions from various suppliers for the different stages of growth and flowering. However, experienced growers usually mix their own optimal nutrient solution. However, the correct pH and ec value must be meticulously observed.
If you want to learn more about hydroponic and aeroponic systems, you have come to the right place in our Hydroponics, Aeroponics, Aquaponics Series series is the right place for you. There, the individual systems are described in detail and their mode of operation is explained.