Simple Hydroponic System

Figure 2 Chinese Mustard Grown by Trough HydroponicsTrough hydroponics is a simple method of growing vegetables without soil. It uses water and dissolved nutrients in a plastic trough or container. This method requires simple equipment and little maintenance.

Trough hydroponics is recommended for city dwellers or hobbyists, as well as farmers. It is a simple, low-cost technology, and is suitable for growing vegetables in areas where land is limited.

The Technology

For trough hydroponics, you need a trough, a trough cover, small baskets, and planting media for vegetable seeds or seedlings (Fig. 1).

The Plastic Trough and Cover

A trough made of plastic or some other opaque material which does not absorb heat and does not rust can be used as a container. The length and width of the trough do not matter, but the height should be 10 – 15 cm. For convenience, the recommended size of the trough is 15 cm high, 52 cm long and 26 cm wide.

The trough cover is made from polystyrene, thick paper or plastic. Its function is to protect the nutrient solution from the sunlight and the rain. It has eight holes into which the small seedling baskets are placed. Each trough can accommodate eight leafy vegetable seedlings (Fig. 2 and Fig. 3). The distance between the holes depends on the type of vegetables being grown.

The Baskets and Planting Media

The small basket contains lumps of thread, or small pieces of cloth or cotton. The seeds are sown in these baskets, and the soaked thread or cotton act as germination media. The baskets are then placed in the holes of the trough cover. The medium is kept moist by pushing some of the thread or cloth through the bottom hole of the basket to absorb the solution.

Preparation of the Nutrient Solution

Use a soluble fertilizer specified for hydroponics to prepare the nutrient solution, at the ratio recommended on the label.

If you use tap water or water from a tank to prepare the solution, you should leave it to stand for some time to get rid of the chlorine. Rainwater collected in the middle of a rainfall can also be used, and can be used immediately.

Germination of Seeds

Sow 2 – 4 seeds into each basket. A week after germination, thin the seedlings to leave only 1 – 2 seedlings per basket. Take care that the seeds are not soaked in the water.


Place the hydroponic tank on a balcony or patio. It should be in full sunshine at least half of the day. Make sure rainwater does not get inside the trough. This is to prevent the solution from being diluted too much.

Control pests and diseases manually, by removing any damaged leaves and by catching any insects. Spray insecticide only if necessary. Avoid spraying with insecticides during the week before harvest.

Allow an air space between the base of the stem and the water surface, to allow oxygen to reach the roots (Fig. 2).

When you have harvested your crop, wash the trough cover and the basket thoroughly before you plant a new crop. Use new media and solution for the new crop.

Merits of the Technology

It is low cost, and does not need extra work such as hoeing, weeding and watering. High-quality vegetables are produced within a limited space (Fig. 4). Minimum protection is needed from pests and diseases. In hydroponics, a low dosage of pesticides is used so there is less risk of toxic residues. Planting can be done at any time of the year, provided the weather is warm enough.

Index of Images

Figure 1 Cross-Section of a Trough for Hydroponics

    Figure 1 Cross-Section of a Trough for Hydroponics

    Figure 2 Chinese Mustard Grown by Trough Hydroponics

    Figure 2 Chinese Mustard Grown by Trough Hydroponics

    Figure 3 Trough Hydroponics Is Suitable for Small Areas

    Figure 3 Trough Hydroponics Is Suitable for Small Areas

    Figure 4 Trough Hydroponics for Small-Scale Production of Vegetables

    Figure 4 Trough Hydroponics for Small-Scale Production of Vegetables

Download the PDF. of this document

Source: Food & Fertilizer Technology Center

Cooperating agency for this topic:
Mr. Mustapa Umar
Department of Agriculture
Fax: (60 3) 2269 8455, 2002-10-01

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6 Responses

  1. Jose Victolero says:

    I am based in Davao City. I would like to ask how can I order liquid nutrient solution for hydrophonics vegetables?


    Jose D. Victolero

  2. Jasnet says:

    i am interested in your hydrophonics system. Can you please let me know where I can buy your hydrophonics system and accessories. i am staying in Kawit, Cavite as I like to plant some vegetables in my backyard. Thank you. Jasnet.

  3. Eliazar Delima says:

    I am very interested in hydroponic, but i can find store where i can buy hydroponic media in Ormoc city leyte. Can you advise me where?

  4. Placido alcano jr says:

    Good Day..
    Im quite interested of this modern farming but im from negros and i find it difficult to buy snap fertilĺizer, can you help me where to buy pls.. ty

  5. Nephere Jayme says:

    Where can I buy this hydroponic nutrients solution? Available in Bacolod City? Pls send me more info. Thank you

  6. Anonymous says:

    This post really shows the best of information about Hydroponics system. And this one really shows the best description of this. As we all know that hydroponics is really one of soil less gardening. And the main thing is, it’s totally free from pesticides. This one is really awesome post. Thanks for sharing some authentic thing about hydroponics.

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