What is this Weird Tube Thing??

This thing just started to show up one day and now it's a least 2'' tall. I think it's pretty cool looking and want to keep it as long as I know what it is and that it woun't start spreading all over the tank.
I don't even know if it's plant or animal.
Thanks,
:)
NewBe
 

michaeltx

Moderator
looks like sopme sort of macroalgae Maybe
but this gets ya back on the front page for others to see and respond.
Mike
 
Sorry to keep bumping but I really want to know what this is. It's growing pretty fast and I don't know weather or now to take it out.
Thanks,
:)
NewBe
 

bang guy

Moderator
It's definately a macro algae. It looks very easy to trim so I wouldn't worry about it getting out of control.
 
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