Indoor hydroponic gardeners want to know the truth about light spreaders and whether or not they work. Light spreaders are supposed to diffuse heat and evenly distribute the light from horizontal high intensity discharge lighting systems.
To begin, people often confuse a reflector with a spreader. The reflector is usually adjustable and sits above your lighting fixture. It's designed to keep light that would normally be wasted because it's heading up, away from the plants, to instead be reflected down toward your garden's canopy.
On the other hand, a light spreader slides on over the mogul base and hangs below the light. It's made to diffuse the hot spot directly below your HID bulb. Furthermore, it's supposed to help your plants on the edges of the grow room receive more light. It does this by spreading the usable light father and more evenly.
Although people report mixed results using various light spreaders, there does seem to be a lot of support for the Super Spreader. Since it reduces heat intensity by reflection, you can normally get your lights closer to your plants. Of course, the closer your lights, the better; so long as you can keep the heat down.
Also, if you have good airflow around your lamp, the Super Spreader actually acts as a cooling fin, further reducing temperatures in your garden.
Only consider investing in a light spreader if you're already using a reflector. Between the two, the reflector is more important. However, combining both is a great option if plants on the edges of your grow room are shaded or if plants directly below your HID bulb are getting burned.
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