"Toni" writes:

If you could take a moment to glance at
http://www.cearbhaill.com/misc.htm and possible identify the
creatures swarming on my glass?

The animal in the cup with the dime looks like an immature mantis
shrimp. Article on mantis shrimp he

http://reefkeeping.com/issues/2004-0...ture/index.htm

As the article discusses, Mantis Shrimp are generally considered
a nuisance animal and most people try to get them out of their
tanks simply because they are such effective predators.

The other photos are less clear, but if they're the same as what
you've caught in the cup, well... Otherwise, I would suspect that
they are mysid shrimp, aka "possum shrimp". Mysids are beneficial
and are a good food source for fish with nonspecific diets. Article:

http://reefkeeping.com/issues/2004-02/rs/index.htm

They are fairly large- larger than the normal things I have come to
accept- a tad over 1 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.

If you have a breeding pair of adult mantis shrimp in the main tank,
they would be successfully hunting all of the little ones that they
could reach, mantis or mysid.

Tank is new- cycle completed the end of January, and contains only a TBS
"package".

The live rock from TBS will many times contain a few unpleasant
hitchhikers, mantis shrimp and gorilla crabs being the ones you need
to take special care to eradicate. That one issue aside, I still
recommend them to everyone simply because what you get is actually
"alive", in stark contrast to the barely biological rubble shipped
from various places in the Pacific.

In any case, read the articles above and come up with a plan for your
particular situation.

Good luck!

Regards,
Ross

-- Ross Bagley http://rossbagley.com/rba
"Security is mostly a superstition. It does not exist in nature...
Life is either a daring adventure or nothing." -- Helen Keller