Cirolanid isopods? Hope not... (PICS)

[affableamerican]

Unknown bug beginning to appear in my tank. Saw a big one on the sand:

Also saw several that were about half that size on the glass:

Note the copepods on the glass as well, for size reference. And remember that the big one in the first pic was about twice the size of the guy on the glass. These don't look exactly like the pics of Cirolanids I've seen on the web, but they are shaped similarly.

Thoughts?

 

[affableamerican]

OK... I guess I shoulda searched for a few minutes longer. Looks like they are Sphaeromatids, so I think I'm good. *whew*