The simplest form of hydroponics is the wick system of fertigating your plants using completely passive methods. In this system, plants draw up the nutrient solution via a fibrous material that is placed in a reservoir. The simplicity of this system is its only advantage because there are no moving parts there is little chance of failure as long as there is water available. The disadvantages of this system are that it does not allow the grower to control rate and frequency of irrigation and during warmer periods the wick system may not be able to keep up with the irrigation needs of the plant. This is the least popular type of hydroponic system and is rarely used at the commercial level.