Tube worm, sea fan, something else?

[MZ18]

Trying to figure out what this is and if its worth the effort to eliminate. It's been growing in size and am starting to see more grow out of the rocks in different places.

I started with dry rock so not sure how it got in here. Is this a cause for concern?

 

[johnanddawn]

aptasia - yes it is a cause for concern - kill it with a syringe full of thick kalk

 

[MZ18]

Nice, will give it a try. Thanks

All those little white circle crusty things seen on the rock. They are on pretty much all the rockwork and sump wall. Any ideas on what they are, was thinking the start of coralline algae but hasn't turned into anything since the past couple months.

 

[You Got Reef?]

Those white spirals are Spirorbid Worms. They are harmless and will get basically everywhere. Very normal for these to pop up in a starting reef tank.

 

[MZ18]

Ahhhh I see, thanks guys

 

[Phil D.]

Red Sea Aiptasia-X is good stuff! They think it's food, and it will seal the mouth and prevent any planaria from being ejected.