Chronze, not really like your picture.
It is mid tank, and I have Maspect Razr LEDs, highest it gets is mid day for about 3 hours at 50 white 50 blue.
My picture above is an extreme close up. Those little disc like tops are very tine. Looks like cyano from a distance, its so small.
Basically mushroom shaped, only flat topped instead of rounded.
Its a mystery. I will try another picture, but no special camera, just cell phone.