Maximum Yield USA 2012 September | Page 140

Green Thumb Gardening How to Choose the Right LED Grow Light for Your Indoor Garden by Alena Dalton LEDs have come a long way in the past few years, but they can still present some confusion when growers go to buy them. Never fear; Alena Dalton is here to answer some of the FAQs about this popular lighting technology… When it comes to indoor gardening, the emergence of LED lighting technology got off to a bit of a rough start. The technology was new—many lights just didn’t emit enough light and they emitted at frequencies that didn’t facilitate optimal plant growth. However, LED lighting has grown by leaps and bounds in nearly every sector of the lighting industry. LED lighting for indoor gardening purposes has really come into its own, allowing gardeners remarkable control, pleasing intensity and relative coolness that makes these lights extremely attractive to the indoor gardener. 138 Maximum Yield USA  |  September 2012 But, what makes a great LED light? How do you select the right grow light for your indoor gardening needs? What do your plants need? What does your garden need? Finally, with those traits in mind, what qualities make the right LED light stand out from the rest? Read on for your answers. lighting. However, still keep the light-toheat ratio in mind when selecting a light. What does your garden need? What do your plants need? Electrical efficiency: In addition to light-toheat, one of the most frustrating aspects of indoor gardening is the electrical bill. This issue, again, is at the forefront of many indoor gardeners’ decision to use LED lighting. Lots of light: We all know that plants need light to provide optimal growth. The potential advantage of a well-designed and maintained indoor garden is the ability to control the quality of light, even when conditions outside are dark, dank, rainy or snowy. A controlled environment: The primary advantage of indoor gardening is control. The gardener is able to create optimal conditions for growth, continuously. Everything about the indoor garden should reflect this consistency. Not a lot of heat: One of the biggest issues, historically, with indoor gardening has been controlling the light-to-heat ratio. Lights emit heat. Incandescent lights especially emit enough heat that temperature control has been an issue when it comes to indoor gardening. Cool temperature is, of course, one of the primary advantages of LED So what makes an optimal LED? We’ve established that your plants need a lot of light provided by a device that doesn’t emit a lot of heat or use a lot of electricity. In addition, you’ll want the ability to create a controlled environment in which your plants can thrive. The perfect LED grow light, then, will perform exceptionally when it comes to light intensity, cool temperature and ability to control. Intensity: Light intensity has been the issue when it comes to LED lighting development. Therefore, you want to pay close attention not only to the wattage of the light, but also the efficiency and intensity at which that light is emitted. Diamond-style LED lights, for example,