The way NFT hydroponics systems work is the plants roots are partially airborne and partially submerged in a thin "film" of mobile nutrient solution. The plants are grown above the nutrient reservoir tank. The nutrient solution is controlled by a submersible pump which circulates the water up to the plants and back down to the reservoir. The roots are only submerged in about 1-3mm of nutrient solution that flows slow enough to prevent damage to the tender root system.


Benefits of using NFT system
1. Low start-up cost
2. Ease of use


Recommended search:
Standard Gully Systems, Rockwool Gully Systems, NFT Wall Garden


Additional notes:
As with most hydroponics systems available, the NFT techniques also has it's draw backs. Because the roots are constantly submerged in water, the root system is not allowed to aerate properly which inhibits it's development. To overcome this obstacle the pump may be cycled to essentially create a flood and drain (Ebb & Flow) system.

Growers may also place air stones under the root system for oxygen to reach the plants. H2O2 (Hydrogen Peroxide) may be diluted and used every 24 hrs. instead of air stones. However, H2O2 prohibits the use of organic growth promoters and other stimulants that reduce bacterial infestation like pythium.

Another disadvantage from using the NFT technique is the plants has very little support to keep them up right. However, growers can easily find ways around this problem. Using stings to tie plants may help - Scrog may be helpful as well.

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