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A few of my light diodes appear to be off

The diodes you are referring to are actually the IR(infrared) and UV(ultraviolet) diodes.  This is 100% normal and nothing to worry about. This is actually a very common question we receive, since the diodes emit a light spectrum that is nearly invisible to the human eye but play a huge role in helping you achieve the most high quality harvests possible.

IR and UV diodes shown below appear to be off:



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