Small black tube / worm in what looks like salt crystal?

[FishyHotel]

Hi guys,

I have noticed a few salt crystals or something of the sort and I was trying to figure out what they were when I noticed one had tons of tiny black dots on it. I pulled it out of the tank and then put it in a scope and it looks like maybe they are tiny black tube worms or something. I would love some help identifying them! Thanks

 

[tbrown]

Is it jelly like? There's a good possibility it's an egg sac for something.

 

[FishyHotel]

It is hard and brittle like a salt crystal, but the little things are in the surface. It is very strange!

 

[tbrown]

They do almost look like larvae of some sort. Do they move at all?

 

[FishyHotel]

They don’t move at all. Taking another look at them in the microscope they are definitely tubes, I left them out of the tank either way so I was just curious if I needed to be on the look out for other things like this. I do have a couple of other crystal looking structures in the tank so I will keep an eye on them and see if the tiny black tubes develop on them.