seatrueblue
Reefing newb
There are several of these on the glass of my 24g aquapod. The image is magnified about 16X. In reality they are about .7mm (about the size of a pencil point)
http://www.youtube.com/watch?v=haJg0w2qbuk
http://www.youtube.com/watch?v=haJg0w2qbuk