This has been bothering me

[Therocketsurgeon]

Tell him to stop. The amount of umols (photons) released by the xmas lights isn't enough for a plant to grow. It looks bright to us, but to the plant its nothing.

[DingusKhan]

Dood it all depends on the spectrum. Maybe the same Chinese factory that makes both got the bins of LEDs mixed up and they work. Which means someone is getting shiitty grow lights on Amazon right now.