Pod ID?

If you could take a moment to glance at http://www.cearbhaill.com/misc.htm
and possible identify the creatures swarming on my glass?
They are fairly large- larger than the normal things I have come to accept-
a tad over ¼ inch each. The odd part is that I am seeing them only in my
overflow and in the sump, and there are 100's of them. Despite the numbers I
can't see even one in the display or in the refugium.

Tank is new- cycle completed the end of January, and contains only a TBS
"package".
Last readings were SG 1.024, pH 8.1-8.5 daily fluctuation, 80.5 ºF, amm 0,
nitrite 0, nitrate 10, calcium 400, alk 3.99 meq/L.
90 gallon tank, 20 gal refugium, 14 gal sump, Euroreef CS6-1 and T5
lighting.


Please tell me they are normal fauna- and benign?


--
Toni
http://www.cearbhaill.com/reef.htm