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LED(Light Emitting Diode)

LED (Light Emitting Diode) is truly the modern efficient and energy saving way of growing indoors. They are the preferred grow light for NASA, because of their exceptionally long live span and efficiency. Each LED emits only a certain light frequency, thus more than one color is needed to achieve the full light spectrum. This is crucial, as plants need wide spectra of light to grow, fruit and flourish. Until recently only 1W LED's was available on the market, but as technology has evolved more powerful 3W and 5W diodes are now widely available. These 3 and 5 watt diodes have a much higher light intensity and efficiency than their older counterparts. A LED light also emits almost no heat, making them ideal for growing in tight spaces where the light hangs close to the plant. They are also hassle-free, lasting over 80 thousand hours and requiring nothing more than a transformer (usually build into the light.) Although LED lights have a very high lifetime, they start losing intensity as they get older. Be sure to change the light after about 50000 hours of use. The grower should be careful when buying a LED light, as cheap 1W knockoffs doesn't emit the full light spectra plants needs. These 1W diodes also don’t have a very high luminance and can’t be used alone. According to studies made in the US the optimal combination for growing plants consist of red, orange, and blue in a 12:6:1 ratio. The grower should also look at the type of plants he is planning to grow, as flowering plants needs more red light than non-flowering plants such as herbs. Plants also use more blue light when in the seedling and vegetative stage. Although switching to LED grow lights can be expensive, it is definitely worth it if done right. 
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