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Nutrient Film Technique (NFT) is one of the most popular and efficient hydroponic systems used in both home gardening and commercial farming. At the heart of this system are NFT Channels, which are the growing channels or gullies where plants are placed and the nutrient solution flows.

Let’s explore what NFT channels are, how they work, and why they’re a top choice in modern hydroponics — especially with Green Tech Hydrofarming solutions

What is an NFT System?

The Nutrient Film Technique (NFT) is a soilless farming method where a thin stream (film) of nutrient-rich water is circulated through channels where plants are anchored. This provides a constant supply of nutrients and oxygen to the plant roots.

What Are NFT Channels?

NFT Channels are the long, slightly sloped, horizontal tubes or trays made from food-grade PVC or HDPE. They serve as both a support structure for plants and a conduit for nutrient flow.

Each channel:

  • Has a flat or slightly curved base.

  • Contains net pot holes for plants.

  • Is sloped so that gravity can help the nutrient solution flow continuously.

How NFT Channels Work

  1. Plants are placed in net pots within the NFT channel.

  2. A pump delivers nutrient solution from a reservoir to one end of the channel.

  3. The solution flows as a thin film along the base of the channel, bathing plant roots.

  4. Excess solution is collected at the end and returned to the reservoir, creating a closed-loop system.

Key Benefits of NFT Channels

✅ Water & Nutrient Efficiency
 Minimal waste due to recirculation. Water usage is reduced by up to 90% compared to soil-based farming.

✅ Oxygen-Rich Root Zone
 Only a portion of the roots are submerged, allowing for superior oxygen absorption, which boosts growth.

✅ Space-Saving & Scalable
 Perfect for vertical farming and compact urban setups. Multiple channels can be stacked.

✅ Ideal for Leafy Greens
 Especially effective for fast-growing, shallow-rooted plants like:

  • Lettuce

  • Spinach

  • Kale

  • Basil

  • Cilantro

✅ Low Maintenance
 Once set up correctly, NFT systems require minimal intervention.

Specifications of NFT Channels (Typical)

Feature

Specification

Material

Food-grade PVC/HDPE

Channel Width

75 mm to 150 mm

Length

1m – 6m (customizable)

Hole Size

45–55 mm (standard net pot size)

Slope

1–3% gradient (approx. 1:100)

Color

White (reflects light and controls heat)

Note: Specifications vary based on crop, setup size, and system design.

Key Components Needed for an NFT System

  • NFT Channels

  • Net Pots

  • Grow Tray/Stand

  • Reservoir Tank

  • Submersible Pump

  • PVC Piping and Fittings

  • pH and EC Meters

  • Nutrient Solution

Why Choose Green Tech Hydrofarming NFT Channels?

At Green Tech Hydrofarming, we provide high-quality, food-grade NFT channels tailored to your space and needs. Our channels are:

✅ UV-resistant and durable
 ✅ Easy to assemble and expand
 ✅ Ideal for both home and commercial farming
 ✅ Backed by expert installation and support

We also offer complete NFT system kits, training, and maintenance packages to help you grow smarter and more sustainably.

Final Thoughts

NFT channels are the backbone of one of the most efficient hydroponic methods available today. If you’re looking for low-maintenance, high-yield, and water-efficient farming — whether in your backyard or a full-scale farm — Hydroponic NFT systems are a smart, scalable choice.