Aiptasia or algae

[ReefRookie22]

Hi, brand new to the hobby. I started the tank a month ago and have had the lights off for most of that time. Started with a piece of live rock from LFS which now has tiny organisms growing on it.
Is it aiptasia or just some form of hair algae? They don't move or appear to have a central tube body. So far my hermits have shown minimal interest in eating them.
I've removed the rock as it's only small.
Any help with an ID and best course of action greatly appreciated.

 

[dakoop]

Not aptasia

 

[Crabs McJones]

Look up bryzoan and see if it matches, kinda what it looks like to me

 

[ISpeakForTheSeas]

Yeah, these are most likely bryozoans- harmless filter-feeders.