New friends or no?

[AGBM5519]

We got a new Rose BTA today and they gave us the live rock it was on. Along with some Stomatellas, we found this tube like things and white flower like things (shown in images). Anyone know what they are, and if they are good for bad for our tank?!
Thankssss !!

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New to this whole salt water thingggg

 

[AGBM5519]

We also got some bristle worms, that I removed just in case. There were two on the rock that I noticed so far.

 

[tilton.s11]

Not sure about the top 2 on the left pic (maybe a zoa??)...the other is a fan worm they don't really help or hurt your tank.

Left bottom may be aiptasia can you get a better pic?

 

[Zactheninja]

Looks like feather dusters and yellow polyps.

 

[AGBM5519]

thank you