Cladonema sp. (small jelly fish?)

[bobbychullo]

from the pic on chucksaddiction.com it looks like I have at least one of these in my tank.

whats the deal with these things? i found a small bit of info that says its not reef safe.

he's kinda cool. small, maybe 3mm long. should I get rid of him before I add any fish/corals?

 

[bobbychullo]

...figured out how to get a pic of it, I have at least 2 of 'em. apparently their lifespan is 47 days, iirc. sticks to the glass and catches food as it flies by. this is it stuck to the glass...

 

[Bongo Shrimp]

Hydroid.

 

[bobbychullo]

on chucksaddiction.com, in the "hitchhikers- odds and ends" section there's a pic of what I have in my tank. i think jellyfish and hydroids are related but chuck's website calls it a jellyfish, Cladonema sp. i can't get a side pic but its bell shaped, exactly like the pic on chucsaddiction.com.