Help identifying

[2002RamAir]

Hello all
I woke up this moring with these attached to my glass cleaner. They look like an egg of some kind. The only fish in the tank are two maroon clowns and two yellow belly tangs. Any help would be great.
Thanks

 

[Radioheadx14]

looks like snail eggs. do you have snails, or limpets?

 

[2002RamAir]

Just Mexican turbos, turban, and cerith snails

 

[Reel North]

Bingo