Nutrient Film Technique (NFT)
A Nutrient Film Technique (NFT) hydroponic system is a method of plant production where the plants are grown in a shallow stream of water containing all the dissolved nutrients necessary for plant growth. In an NFT system, the nutrient solution is continuously circulated past the bare roots of plants in a watertight gully or channel. The plants are supported by net pots or other tools like Grow Grips and their roots dangle into the solution below. The constant flow of nutrient solution with oxygen provides plant roots with what they need in a way that helps to prevent drowning. NFT systems are considered simple and easy to set up and maintain, making them a popular choice for both new and experienced indoor growers.
What are the benefits of using a Nutrient Film Technique (NFT) Hydroponic System?
There are several benefits to using a Nutrient Film Technique (NFT) hydroponic system. One advantage is that NFT systems are efficient in delivering nutrients to plants. The constant flow of nutrient solution with oxygen provides plant roots with what they need in a way that helps to prevent drowning. NFT systems are also designed very simply and require very little maintenance. There are no water pumps, feeder lines, or nozzles that could clog. Additionally, NFT hydroponics use less water than other hydroponic systems.
What are the disadvantages of using a Nutrient Film Technique (NFT) Hydroponic System?
There are several disadvantages to using a Nutrient Film Technique (NFT) hydroponic system. One disadvantage is that NFT systems are dependent on electricity and pumps to ensure a constant flow of nutrient solution. If there is a power outage or pump failure, the roots will quickly dry out and your plants could be severely damaged. Additionally, plants with large tap-root systems may not do well in an NFT system. The dense root system may partially block the flow of water.
Which plants grow best in a Nutrient Film Technique (NFT) Hydroponic System?
There are many plants that can be grown successfully in a Nutrient Film Technique (NFT) hydroponic system. Some of the best plants for NFT include leafy greens such as lettuce, romaine lettuce, kale, spinach, red leaf lettuce, and bok choy. Herbs such as cilantro, Genovese basil, parsley, tarragon, thyme, mint, and dill also grow well in NFT systems. Fruits such as strawberries can also be grown in NFT systems.
How do I set up a Nutrient Film Technique (NFT) Hydroponic System at home?
setting up a Nutrient Film Technique (NFT) hydroponic system at home is relatively easy. Here is a step-by-step guide to setting up an NFT system:
- Choose a location for your NFT system. The location should be level.
- Build or purchase grow channels. The channels should be sloped so that the water can flow freely through them.
- Add your nutrient solution reservoir and connect it to the pump.
- Add an air pump and air stone to the reservoir to aerate the water to provide aeration to the roots of the plants and prevent roots from rotting.
- You will also need some basic materials such as a reservoir, air pump, hydroponic nutrients, air hose and air stones for bubble generation, growing media to support the plant in the basket, grow nets or baskets to contain the plants, and equipment to monitor the pH and EC of the nutrient solution.