little brown hairs?

[armison89]

there are little brown haits all over one of my rocks. its been in a tank with 3 other rocks for a month in a bb tank of saltwater. non of the other rocks have the hair. any ideas?

 

[tent boy]

spaghetti worms?

 

[cardiffgiant]

If it's that really bristly turf like algae, turbo snails will eat it.