Should I worry about this

[831reefdad]

Please help identify this that is coming out of substrate

 

[DaddyHook]

Please help identify this that is coming out of substrate

Spaghetti worm good for your tank!

 

[tribbitt]

Agree with @DaddyHook.

It’s a type of polychaete worm and is a detritivore, eating bits of fish waste and uneaten food