Small white dots on glass

[4kidsandapug]

Hi all. I have a few dozen small white dots on the glass. I can’t get my camera to focus on enough on them to give you an idea what I’m referring to though.

They are about the size of a no.2 pencil tip. If my eyes don’t deceive me, they look white with a yellowish sack. Almost like eggs but I can’t tell due to the size. I doubt this was helpful but just asking. Thanks!

 

[lapin]

The most common things are snail eggs, pods, flat worms, sponges

 

[NowGlazeIT]

Look up hydroids, I always get them in the start of a new tank. they like to stick on the glass for a couple weeks then they fade off