collaborative post | Hydroponics is a system for growing plants in an environment with proper temperature, nutrients, and light equipment without the use of actual soil, unlike conventional farming. Now, the grower can control the system with the precision required. It leads to the speedier production of accurate and strong crops.
Using controlled systems, such as hydroponic systems, growers can set the desired nutrient level, pH, and water supply according to the specific needs of their cannabis plant to provide optimal care.
Growers can cultivate cannabis with hydroponics techniques with various methods, as there are different types of hydroponic systems. The different types of hydroponic systems allow growers to find an optimal option. They can always choose the system that fits them best. Whether they want simple choices, reliable or accurate, hydroponic systems are purposely fit for all. It’s like selecting the exact tool for this task!
Building on this flexibility, some growers scale or adapt their setup with vertical solutions like a Tower Farm, which allows plants to grow upward rather than outward while following the same hydroponic principles and making better use of available space. This approach is especially useful for those looking to grow multiple plants efficiently, whether for herbs, leafy greens, or other crops, while maintaining tight control over nutrients, water, and overall conditions.
Various Types of Hydroponic Systems
The Main 8 Types of Hydroponic Systems
Hydroponic systems come in various forms, each with advantages and considerations. Let’s take a detailed look at eight primary types of indoor hydroponic systems commonly used for cannabis cultivation.
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Deep Water Culture (DWC)
A DWC system is made up of plant roots that are set in a nutrient-oxygenated solution. This is the most basic form of hydroponics, which will be ideal for newcomers to the world of hydroponics. It also maintains the high water level and allows aeration and nutrients to be available for the roots of the plants.
In a DWC system, the nutrient solution (water) is usually changed less often than in other hydroponic systems because one large volume of water holds more nutrients and ensures stable pH levels (other factors stay the same).
In DWC, an air pump aerates the water and provides oxygen to the plant roots. This helps prevent root rot and promotes healthy root growth. So, if DWC is the grower’s choice for marijuana farming, they must buy a premium-quality oxygen pump and an airstone to prevent the roots from rotting.
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Nutrient Film Technique (NFT)
Nutrient Film Technique (NFT) is a type of hydroponic system in which plants are grown in a thin film of nutrient-rich water. The plants’ roots are suspended in a narrow, sloping channel and constantly exposed to a shallow film of water that flows over them. This technique supplies nutrients and oxygen continuously while washing away waste particles.
In an NFT system, the nutrient solution is delivered to the highest end by a pump and then flows downwards through the roots of plants back to a reservoir. This process continues, supplying the plants with sufficient output and oxygen.
This system is more effective than the others, considering the space factor, except for the maintenance problem, which prevents any interruption of the flow from resulting in a clog or dry roots.
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Ebb and Flow (Flood and Drain)
Ebb and Flow, or Flood and Drain, is a major hydroponic technique that uses flooded and drained hydroponic tables or trays filled with solid nutrient solutions. During this hydroponics growing system, the nutrient solution continuously flows to the top of the root zone, supplying oxygen and minerals directly to the plants. The recycled water is then drained to a reservoir, where it is successfully stored for another flood cycle.
This method is low maintenance, so it is perfect for plants that need water occasionally, like cannabis. It will prevent plants from being overwatered. Nevertheless, having a reliable pump is indispensable for the proper ebb and flow cycle.
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Wick System
The Wick system is a known hydroponic method that uses a wick to transfer the water and nutrient mixture from the reservoir directly to the plant’s roots. This technique is commonly used for indoor hydroponic systems of cannabis since the equipment required is minimal, and rooms can easily accommodate them.
In the Wick system, porous wick like cotton or nylon is placed into the reservoir and goes deep into the growing medium where the roots of plants are situated. The wick acts as a passive supply chain, absorbing the nutrient solution from the reservoir and keeping the plants moist and well-fed.
This simple approach requires no moving parts, generating a very low maintenance requirement. However, it is unsuitable for big plants or systems with non-uniform nutrient distribution.
Wick Hydroponic System
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Aeroponics
Aeroponics is a hydroponic system in which plants are grown in a mist or fog of nutrient-rich water. It is a different type of system for the plants’ roots. The plants’ roots do not stay in the water; the nutrients and oxygen are delivered using a fine mist to the roots. This allows them to achieve maximum oxygenation and a low risk of root diseases.
In the hydroponics system, the plant roots are usually suspended in a chamber where the nozzles or mist rippers are placed. The nutrient solution is sprayed at regular intervals, and the overflow is either collected or recycled, making it a safe, consistent, and efficient alternative to conventional watering techniques. This leads to a high oxygen intake and, subsequently, incredibly enhanced root growth. It is the most tedious system because it depends on well-tuned misters and sensors for functioning.
Cannabis Cultivation
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Drip Systems
It is a type of hydroponic system in which the plant is watered via a network of pipes and tubes connected to a pump. The pump moves nutrient-enriched water in droplets using small emitters that the roots directly absorb.
The principal advantage of the drip system is that it is very accessible and saves water and nutrients by delivering an accurate amount of water and nutrients to every plant, besides not wasting them and promoting optimal growth. Moreover, as a benefit, the drip system provides an extra opportunity to control levels of nutrients and pH compared to other watering systems. For this purpose, it is also suitable for different growing mediums and can be automated for low-maintenance operations.
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Aquaponics
Aquaponics is a special design of hydroponics technique that unites traditional hydroponics with aquaculture (the cultivation of animals living in water environments). In this system, fish or any other aquatic animal are raised in a tank, and the plants grown using the hydroponic method utilize the plants’ waste for essential nutrients. The flow of freshwater sustains all the different varieties of plants while they filter the water to support the fish growth, creating a symbiotic ecosystem.
The advantage of aquaponics is its environmentally friendly character and cost-effectiveness. It cancels the use of artificial fertilizers, diminishes water usage, and results in a self-sufficient system where waste serves those in agriculture and the ecosystem. This technology allows the crops to be cultivated in different climatic conditions; hence, it is used for various crops. Thus, it is a good choice for the sustainable farming method and balances the pH level of plant growth.
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Kratky Method
The Kratky system, which does not require pumps or electricity, is a passive hydroponic system. This type of cultivation is carried out using tanks where plants are grown with a nutrient solution, oxygen is supplied through the air, and the solution slowly expires due to the plant’s use. This method of cultivation is specifically useful for leafy greens and herb growing.
One of the biggest pros of the Kratky technique is that it is very simple to use and has very few maintenance requirements. It is also easy to set up even in a small room, which is why it is in demand for urban gardening. This method involves the whole cycle of the processes. Thus, it does not require regular water changes every week or monitoring of nutrient levels, which makes this option convenient for beginners or those who have limited time.
The Bottom Line
Choosing the best type of hydroponic system for a cannabis garden depends on various factors, including experience level, the size of the growing area, and the specific requirements of the cannabis strain growers are cultivating. Deep Water Culture and Nutrient Film Techniques are commonly recommended for their yield and growth rate, but they require more control and are best suited for experienced growers.
Disclaimer: This material is for informational purposes only and should not be relied on for legal, medical, financial, or any other form of professional advice.
