Divided into 4 groups: As the leading popular plants consumed fresh and cooking consists of carbohydrates 1-2 percent protein fat 1-2 percent and 0.25 percent, it also contains vitamin c and contains Antioch-daen (antioxidant) of various kinds which will capture free radicals caused by the poisonous stuff makes your body from cancer. There are currently planting vegetables in the hydroponics system in the level of trade, without lettuce as a vegetable, popular in hydroponics systems. Because planting in this way, a constant uniform output can be controlled and managed to control the environment, appropriate plants. Make the output with the size, shape, weight and grown every season. It also makes it possible for plants to grow quickly. As a result, can be harvested quickly. Planting material is one of the factors that are important for the growth of plants in a hydroponics system, or system of planting soil. It is necessary to select the materials used to suit the needs of each type of plant. In General, a good planting material should be clean, drain well. A portion of the water and the air properly. Looking for cheap and easy. Today, the plant materials are often imported from abroad and high prices. It also cannot be reused to benefit again. This experiment intended to study the various planting material suitable for production of lettuce. And study guidelines on use of material life multiple times, or find a local General. Import substitution and reduce the amount of waste material and perfect light-cool light to save expense costs. Helps plants to grow properly and so useful in the production of lettuce the next trade terms.
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