Unlike high pressure sodium bulbs, they do not emit a lot of heat into the growing environment. Because air and water temperature are so important to a hydroponic grow, this could be a massive benefit for those that are growing in confined spaces or need to control their heat for other reasons. It also allows you to place your lights much closer to your plants’ leaves, which helps you take advantage of the inverse square law for light.

LEDs Vs Incandescents or Fluorescents?

Along with these basic advantages, LED lighting also has a high luminous efficiency when compared to incandescent and fluorescent lights. Luminous efficiency is the ability of a light source to produce visible light, so the more efficient a light source is, the more visible light it produces per unit of power input.

The short list:

• Less energy
• Last longer
• Smaller
• Solid state (more durable)
• Lower heat

Longer Lasting

LEDs last far longer than incandescent or fluorescent bulbs. This is because they are solid state, meaning that there are no vacuum or gas components. There are reports of LEDs manufactured in the 70s and 80s that are still working today!

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