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Hello SHRED, those are the IR lights, they are invisible to human eyes, but they are working. 


Thanks WeedI noticed my Mars II 900W light has 5 LEDs not working.
At what point is there a noticeable performance drop? 10? 15? 20?
What is the procedure for replacing burnt out LEDs?

Hey Shred can we get a pic of lights on. Reason i ask is i think you may be mistaken the IR bulbs as burnt out diodes.
IR is not able to be seen with the human eye so thats why they may appear out.