Never seen this before.

Anyone have any idea what this is. It has been on the glass for 3 days and not moved. Worm, eggs????

 

Looks like snail eggs. what type of snails do you have in your aquarium?

 

Turbo, Nerite, Cerith probably others.

 

That's kinda of what i figured, just thought some-one else would have seen them and knew what kind.

 

It seems that several of my snails will do this on the same days. They're still at it early in the morning before the lights go on. Pretty cool.

 

That looks a lot like the pattern that turbo snails leave when they clean.

 

First time see this! Cool.

 

Do you have any Nassarius snails in the tank? A couple years ago I watched one of mine lay eggs in a pattern very similar to that.

 

That's what lays them in my tank.