ID help, please

[Idoc]

I don't believe these to be bad hitchhikers, or at least I'm going not. I assumed they were snail eggs, but they seem to look different than the cerith or nerite eggs I've had in my glass already.

These are small, clear sacks with several tiny white balls inside. They are attached to the glass on one end and kind of flap in the flow. I have hundreds of these that just recently showed up. I have added Astraea turbo snails that recently started to focus on the glass. Are these Astraea eggs?

 

[reef lover]

While idk what that is I can assure you its not astrea as they release sperm and eggs into the water column.

 

[BMW540]

Nassarius eggs

 

[Idoc]

Nassarius eggs

Thanks! I didn't think about the Nassarious snails since they spend most of their time in the sand. But, they have been on the glass lately now that I think about it.