Hitchhicker pro or Con ?

[aquatica-tech]

Well today I re-aquascaped and I saw this worm on the side of my glass that was burrowing in my sand? is that good or bad?

 

[mie]

Lots of worms my friend, a pic or a little more detail would be helpful.

 

[nycbob]

most likely a brittle.

 

[aquatica-tech]

I saw the thread of worms and im thinking its a Hair worm, but do they burrow through the sand ?

 

[michaeltx]

they can yes. 99% of all worms that we see in our tanks are good guys though.
Mike