Wowsers?! Hitchiker.

So about 3 days ago, I went kayaking in the gulf of mexico. I came across a piece of sea lettuce, which I thought would be cool to have in my tank.

I put it in a little "breeder", which I"m using as an in tank fuge.

It's no more than 2 mm long, by 3mm wide. When I make any sudden movements, it very quickly shrinks into a little ball.

What is it?!

 

Looks like a little hydroid of some type.

edit
wait I take that back. A little aipitasia is more likely

 

Most likely aiptasia. Nuke it.

 

Dangit.

I thought it was something awesome and cool.

So I have to kill it?

 

You don't have to but you probably will want to.

 

you can leave it, but then your tank will be over run by that weed. id nuke it as said above

 

Looks like aipitasia for sure. Don't even try and scrape it off, it speads like wild fire. I'd nuke it for sure.

 

Could be BP oil too.. Just kidding.

 

Its your choice... I'm on my phoe so the pics are VERY small lol so I can't tell anything of what it might be. I had aptasia infestation an it wasn't hard to get under control, IMO its not going to over run your tank over night. So if you would like to let it grow and see what it is, go ahead! Just be sure to keep it QTd, just in case lol

 

vingear will kill it. kalkwasser paste will too..