Are these Diatoms?

[plc001]

40b
11 weeks old.
Started with dry sand and rock.
Fishless cycle
Livestock: 2 clowns, 1 Scopas Tang and a Six-line wrasse
Lights now running at 5 watts or 9%on the blues, no red, no green and 5% on the white.

Thanks.

 

[AlgaeBarn]

Looks like! ~Shaun K.