White worms living on my frags?

[cgr124]

Hello I just noticed a bunch of white creatures that look like worms living on my Xenia, Hammer, and Mushroom frags. Anyone have any idea what this creature is? Should I be concerned? Thanks

 

[vetteguy53081]

May be be spirobids. Quite hard to verify as pics are both very fuzzy and blue in color
Pics Under white lights always best

 

[cgr124]

Thanks for the reply. Sounds like those worms are harmless. Tank is only a few months old. I took another pic in white light too.