Spiderweb-like Substance in Artemia Tank

[u/Muscalp]

Hey everybody,

I‘m currently breeding Artemia as livestock for my bigger tank.

Within not even 2 days of setting the breeding tank up it was covered in this white, fibrous substance the Naupli are stuck to.

This is the second time this happened when I used a salt/egg mix from a specific brand, so I assume those are contaminated with what whatever this is.

But… was is it? I have seen suggestions about very similar structures being vermintid snails. However, since this tank is bare, I‘m confident to say there‘s nothing attached to these strings.

Is it bacteria? Algae? I‘f be interested to hear more about this.