Mysterious Grey Tubes

[Sea Turtle]

I have been noticing these long grey tubes almost like worm castings all around in the tank. My guess is that it is snail feces. Is this correct? Do large turbo snail produce poo like this? Or cold it be something else.

They really aren't worying me and don't look that bad, I am just curious what it could be.

 

[SkiFletch]

Pics? Are they hard or soft?

 

[Sea Turtle]

Pics? Are they hard or soft?

I don't knwo for sure. I will check it out when I get home. I thin that they are soft. I will try to take a pic tonight and post.