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Hydroponic farming grows premium grade fruits, vegetable and herbs without the use of soil – plant nutrition is provided by water-soluble mineral elements. Hydroponics holds great promise in the Lang Ya area. Compared to other farming methods, much less water is used, because there is no evaporation or drainage. Hydroponics is pollution-free, because the plants use all nutrients put into the system. This means there is no leaching into the soil, or runoff that can contaminate waterways. There are no weeds, so chemical or manual weed control is unnecessary.