IOW: "if you're not infested, your plants suck." Might be sound reasoning. ^^
But seriously, those look frosty as hell... but kinda... clumpy, i guess, on the leaves. Is that the "white dots" we're supposed to see? The black dots are clear enough i guess...
Maybe do a thorough cleaning of the surrounding area (and yourself), and stick your face in your plants for a while, and just watch. If your lamp's too bright, turn it off an hour early (or on an hour late) and just chill in natural/regular light, and try to get a visual on the actual pest. Look everywhere, over, under, between, around... if you have an infestation, you should be able to find a cluster of bogeys somewhere, or at least one visible culprit.
But that "lights on" pic takes on a sort of monochrome effect, makes all the colors too similar, and doesn't provide enough contrast to get the clearest look.