Tiny Jelly ?

[KeepYourAnemonesCloser]

Hi, can anyone identify this? Its about 1 mm, really small. The dark interior tube moves around. It swims like a jellyfish. I have a video but haven't figured out how to post video yet. I have quite a lot of them in a tank I'm using as a copepods habitat experiment. Lots of macro in it, using a warm light probably 7000k but I'm not sure. Its very yellow. Temp is about 78 F and I've got air bubbling in there but thats it. A little nuisance algae/bacteria here and there but overall pretty staple. Lots of little critters swimming around. Got these a few other larger things that I'm trying to identify before I start seeding my reef tank with critter-rich water in case these are bad.

 

[Potacka]

No idea but it's very cool

 

[lskywalker5]

When in doubt - throw it out. I dont know what it is, but it is cool. With that said, I would not have to think twice to know not to put it in my system.