What is this growth?

[joeposch]

I have a few patches of this. Guy that i bought the LR from thought it was aiptasia. I cannot find anything on it besides this undescribed photo/drawing. I'll try and get a real pic soon

http://pbckt.com/pw.QcFv33

And i have some aiptasia looking things in my tank, but does that retract very fast (as a fan worm does)?

[Pufferpunk]

Looks like peanut worms or tube worms. Def not aptasia.

[joeposch]

I also have these soft worm things that are sessile. They stick out a couple inches and feel around. They only appear at night. And, is 1 bristle worm ok to have? So far only one has shown up. I had this rock for a month. From a long ago established tank. Also, i have tiny little bugs (1/2 size of a friut fly) are these good stuff? And 3-4" strands of white/clear hair sized things with little balls attached at the end. Sway in current all day. Would 'rock at a time high sg dip be best for bristle worm removal since coral banded shrimp and arrowhead crab= expensive puffer snack?

[joeposch]

I should add, this rock was put in my cycled tank and the #'s actually shaped up and stabilized quickly. Should i just leave well enough alone?

[wagner7123]

all of those critters are fine. no reason to remove any thing.