Bury the soil....
...and embrace the Nutrient Film Technique!
With the Nutrient Film Technique, or NFT for short, plants are placed in the grow system without any extra growing media which means there is no more lugging bags of soil and coco around!
A solution of nutrients is constantly pumped over the plants' bare roots and the run-off flows back into the reservoir. Fresh nutrients are mixed with fresh water to keep the system topped up above its minimum level. The tank only needs to be emptied and refilled on a monthly basis! The pH is checked on a weekly basis to give an indication of the nutrient levels.
Growth is fast and healthy because there's no soil to restrict root access to the constantly available water, nutrients and oxygen.
To transfer plants into the Gro-Tank or Multi-Duct just tip the plant out of its pot and place it straight into the Gro-Tank or Multi-Duct tray without adding any extra media.
If you've started in rockwool just place the rockwool block directly onto the Gro-Tank or Multi-Duct tray when you're ready to transplant.
Switch to NFT and you'll never switch back!
How to set up and use the NFT system
Ensure plants are well-rooted before they go into the system. The starter media should be covered in white roots.
- Spacing - as a rule of thumb 1 plant per square foot. This can be increased or decreased depending on plant variety.
- Leave the pump running constantly.
- Start plants in either 3” or 4” rockwool cubes
- If using rockwool cubes completely remove plastic wrapping from the cubes.
- If moving from pots to the Gro-Tank remove the plants from the pots so the roots can access more oxygen.
- All but the smallest of plants will need additional support, i.e. yoyo’s or pea netting.
- Set the flow rate on the pump so that the nutrient solution moves over the spreader mat constantly, but not so much that the roots are submerged.
- Cut lengths of spreader mat long enough to allow an overhang of a few inches from the tray into the tank.
- Plants under lights will take up water at a faster rate than they take up nutrient which means the EC will rise over time. Top up the tank with half strength nutrient solution, check EC and add extra nutrient if required.
- Then adjust pH level and perform a solution change every 2-3 weeks to keep the pH and EC balanced.
3” / 4” pots filled with soil or coco
3” net pots filled with clay.
Feeding Guide
The Nutrients and pH
Topping up the Tank
Emptying the Gro-Tank
Watch the NFT system in action!
Contact or visit us for more information about the Nutriculture NFT Nutrient Film Technique system