Usually pieces of porous material with high absorbent power like nylon ropes are used as wicks. One end of the wick is placed at the bottom of the growing container, and the other end is left hanging down the nutrient solution. The wick draws the water and nutrients from the reservoir up into the growing medium in the container.

While you can basically use any types of growing medium in the Wick hydroponic system, it is recommended to use growing mediums that can retain more water and nutrients for example, perlite, vermiculite, and / or coconut fiber. A mixture of perlite / vermiculite in the ratio of 1:1 works great in the Wick system, though the combination of perlite and coconut fiber is common too.

As the Wick system does not have proper aeration for the roots, it is usually wise to install an external air pump to supply oxygen into the nutrient reservoir. Run an airline from the air pump into the reservoir with the other end attached to an air stone. This will slowly oxygenate the nutrient solution in the reservoir. When nutrient solution is supplied to the root zone, it allows the roots to breathe.

There are few issues you need to consider when using the Wick system:

1. It is hard to achieve the correct moisture level for the plants as the wick used might not be able to pull sufficient water and nutrients to nourish the roots. You need to constantly experiment with different types of wick and growing medium in order to get the right growing environment.

2. The plants may use up the nutrient solution faster than the wicks can provide if the plants are big or if they take up large quantity of water.

Related Posts

• The Drip Hydroponic Growing System
• Building Ebb and Flow Hydroponic Systems
• Hydroponic System: Nutrient Film Technique (N.F.T)