What is that?
Simply put, hydroponics is growing cannabis in water. There are 3 elements very important: Water, artificial medium, and nutrition. It goes without saying that air and light are also part of this, but I will leave these out of consideration. If you know, master and apply these three points, then you have the most important requirements of Hydro cultivation for each other. There are also some different ways of hydroponic cultivation, but the basis is the same. The roots hang directly in the water with the food.
Before you start!
Unfortunately growing cannabis is still not allowed, however having a maximum of 5 plants is tolerated - this is different from being allowed. Even if you have cannabis plants on your balcony, the judiciary can still take them away if they think you are causing a nuisance. Hydroponics is a professional way of growing. Hydroponics is seen as a way of growing hemp. This also means that any punishments will be more severe than when you grow on earth.
Rock wool is most commonly used in cannabis cultivation. Rock wool is cheap, light, clean, it absorbs water well and is available at every hardware store. Rock wool has a high PH value of its own, so it is advisable to lower it before you put your plants in it. Rock wool has a light buffering effect, but not much in relation to soil or coconut. It is therefore important to keep a close eye on your PH. Twice a week is certainly not an unnecessary check. However, rock wool does ensure good coverage of your roots. This is important to protect the nutrients and to prevent algae growth in the water.
Hydroponics with clay granules
Clay pebbles are widely used by home and hobby growers. It is reusable and easily available at any garden center. Do not reuse more than 2 or 3 times. Clay granules retain moisture very well, but both provide less support for the root. It is better to put the seedling in a block of rock wool first, this provides more stability.
Hydro is growing on water. The roots that are normally in the pot now hang out. Usually, a plant is placed in a small stone wool block, after which they put it in a pot with clay granules. The pot is made of a kind of mesh, there is room for the roots to grow through and that is also the intention. The roots grow out of the pot and will eventually yield a reasonable bunch of roots, which hang in the water. Growing on hydro is not suitable for beginners because the administration of nutrition and the maintenance of EC and PH values is extremely important.
Growing on hydro - Clay pellets in deep water culture
As above, with the difference that the roots hang loose in the water, and the plant hangs in a pond pot with granules, just in the water. An effervescent stone is placed under the basket. This type of hydro is very maintenance-friendly and simple for a grow with the same cannabis strains. You can place several plants in a water container. There is virtually no buffering effect with this method. The buffer you have comes from the plant's metabolism. A fast metabolism means that the plant burns or uses its nutrients faster. She will therefore also suffer from incorrect nutrition. Often a heating element for the water is needed to get the water to the right temperature. In this way, the roots absorb the maximum amount of moisture and nutrition.
What do I need before I can start growing on hydro?
Broadly speaking, you have to take the following items into account, a lot is available in a garden or construction center. There is also a lot to be found on the internet!
You will need the following items at least to be able to grow on hydro
Rock wool cubes
Plant nutrition suitable for growing on hydro
It is worth the investment to purchase a complete nutritional line
Water hoses and pipes
Medium fry and - fry water
Air pump (for example for aquarium)
Air hose and effervescent stone
Heating element (e.g. for aquarium)
Leakage protection (do not cut back on this)
Extraction and carbon filter
Temperature and hydrometer
EC and PH meter and means to adjust your PH