Nft system

Nutrient Film Technique (NFT) is a hydroponic method where plant roots sit in a thin stream of nutrient-rich water flowing through sloped channels. The shallow "film" provides nutrients while keeping roots exposed to air, promoting fast, healthy growth.

How Does NFT work?

The core idea of the NFT system is continuous circulation of the nutrient solution. Here’s how it works:

  1. Nutrient solution is stored in a reservoir.

  2. A submersible pump moves the solution from the reservoir into one end of the growing channels.

  3. The solution flows as a thin film over the plant roots inside these channels.

  4. The leftover solution drains back into the reservoir, where it is re-circulated.

The system uses gravity to move the water through the channels, so the channels must be installed at a slight angle (typically 1–3% slope).

Components of a NFT System

  • Growing Channels or Pipes: Usually made of PVC or food-grade plastic, where the plants are placed in holes along the top.

  • Net Pots or Holders: Hold the plants and allow roots to hang into the nutrient stream.

  • Reservoir: A container that holds the water and nutrient mix.

  • Water Pump: Circulates the solution from the reservoir to the grow channels.

  • Return System: Allows nutrient water to flow back to the reservoir by gravity.

  • Air Pump (optional): To increase oxygen levels in the reservoir.

  • Nutrient Solution: Water enriched with essential minerals like nitrogen, potassium, calcium, magnesium, etc.

Key Features of NFT System

  • Water-Efficient: Since the water is reused, NFT systems conserve water compared to traditional farming.

  • Low Maintenance: Minimal growing medium is required, making cleaning and upkeep easier.

  • Highly Oxygenated: Roots are well-aerated because they are partially exposed to air.

  • Ideal for Indoor and Vertical Farming: Compact, lightweight, and easy to scale up.

  • Fast Growth: Plants get direct access to nutrients, leading to faster development and better yields.

Best Plant to grow NFT System

NFT systems are ideal for lightweight, fast-growing plants with shallow root systems. Examples include:

  • Lettuce

  • Spinach

  • Basil

  • Kale

  • Mint

  • Pak Choi

  • Arugula

  • Coriander

  • Swiss chard