Is this a feather duster or pest?

[Reefermadness13]

Thought this was a feather duster growing out from my zoas but it hasn't grown much and now there are a couple more growing. Anyone know what it Is? Good? Bad? Leave it alone or cut it off? Not the greatest picture but I had to zoom in far

 

[Rover]

It is very blurry, but the white stick with the 'frills' on the end of it sticking out on the right side of the closed up Zoanthid looks like a feather duster to me.

 

[LiveWire]

I agree with @Rover

 

[mta_morrow]

Touch it with something and see if it quickly retracts inside the tube.

If so, it’s a feather duster.

Looks like one to me.

 

[Reefermadness13]

It does retract. Is it ok to be attached to the zoas? Will it turn into a big feather duster?

 

[RandyC]

It does retract. Is it ok to be attached to the zoas? Will it turn into a big feather duster?

That looks like your common variety feather duster. They don't grow much bigger than what you see, but if you broadcast feed a lot, will multiple quickly if you don't have any fish that eats feather dusters.

 

[mta_morrow]

It does retract. Is it ok to be attached to the zoas? Will it turn into a big feather duster?

I have a lot of soft tube feather dusters in my tank. Heads on the largest are dime size in diameter.

I can’t say for sure how big yours will get.

Perhaps some really good pics could help ID exactly what kind you have.