TL;DR
NFT (Nutrient Film Technique) is a hydroponic growing method where a shallow stream of nutrient solution flows continuously over plant roots. This provides constant access to water, nutrients, and oxygen, supporting efficient growth in compact, scalable systems.
NFT systems use channels or trays positioned at a slight incline, allowing a thin film of nutrient solution to flow past plant roots before returning to a reservoir.
Because roots are not submerged, they receive excellent oxygen exposure while maintaining consistent nutrient access. This makes NFT particularly suitable for fast-growing plants and high-density setups.
Continuous nutrient delivery: Roots receive a constant supply of water and nutrients
High oxygen availability: Roots are exposed to air while remaining hydrated
Efficient system design: One reservoir can support many plants
Space-saving layouts: Ideal for high-density growing environments
Low growing media requirements: Plants are typically supported with minimal substrate