What are the white things o tanknglass? Snail eggs? Copepods? Other?

[Llama 72]

 

[shred5]

I can not make them out from that photo. They could be eggs to anything. They could be actually hydroid, small snails, flatworms, spiroid worm etc. Heck they could even be corals that settled from planulae.

 

[Timfish]

Could be, or worms, or isopods, or sponges, or . . .

 

[OrionN]

A. Lose up, in focus picture of one of the spots is needed.