Hydroponic Sytems Part 2 – Nutrient Film Technique NFT

This system is probably the most handiest of any hydroponic system. It does now not involve the usage of timers to switch pumps off and on. The seeds need to be propagated first in a separate tray till they have a terrific enough root base to be placed in the machine.

How does it work?

The gadget includes long shallow trays which come with a protracted lid keeping the gadget enclosed. There are cut outs in the lid that’s wherein the flora are placed. The plant sits in a plastic pot with slits to allow the roots to grow through them. They seem like a smaller version decentralized finance news of the inner pot used in flood and drain systems.

The trays are located above a water tank and a pump connected at one stop to pump water into the trays. There ought to be an amazing gradient in the trays in order that the water flows down the tray and again into the water tank. Typically the gradients used are 1:30 or 1:40 this stops water pooling in the depressions caused by uneven surfaces and roots. The concept is that the roots of the vegetation are continuously bathed in a nutrient rich water supply and produce wholesome, linear growing flora.

The name nutrient film is in connection with the skinny movie of roots as a way to in the end shape on the lowest of the tray. It wishes to be a totally shallow move of water with simplest the base of the roots submerged; this permits the relaxation of the root to be open to the air and get the vital oxygen required for growth.

The systems are available in distinctive lengths which could maintain unique numbers of plants. Essentially you could have any period of NFT system, but the longer the machine the more threat that waft might be interrupted. Systems longer than 12 metres generally tend to get much less increase in vegetation toward the quit due to the nutrients within the water being taken up by the flowers toward the reservoir. However this trouble can be conquer by means of putting in some other water supply along the length of the channel.


I have noted more than one troubles with NFT systems consisting of pooling of water and nutrient discount within the water in long machine set ups. However there are a pair greater.

Pump Breakdown

As NFT structures handiest require a small, shallow water delivery the pumps used aren’t very effective. They are also on all the time that means that they get numerous action over the path of the grow. This coupled with possible salt precipitation from the dissolved nutrients (especially in tough water areas) method that sooner or later the pump is in all likelihood to interrupt down. If you can seize this speedy then other than the price of a brand new pump, there may be no real problem to the flowers. However if this goes left out it approach that the roots will dry out very quickly and this can affect boom.


The plant roots are continuously submerged in water and this can result in bacterial infections inclusive of pythuim. Pythuim is higher called root rot and might decimate your vegetation if it isn’t detected early. There are merchandise available on the market which can get rid of this in case you are unfortunate enough to get it, but the high-quality manner is prevention. This can be finished through changing the water reservoir periodically and including preventative additives to the nutrient answer.


Heavy fruit yielding plant life can end up unstable in an NFT machine. This is because of the roots developing long and flat and now not having any a superb deal of purchase. This causes the plant to come to be pinnacle heavy and that they fall out of the trays – not best! This may be triumph over by using assisting the plants by the usage of yo-yos, string or canes. This will deliver some stability to the plant and allow it to keep developing and bearing fruit with out toppling over.