Whitish stuff on aquarium glass and Sea Slug

[Shnooks1215]

This weird stuff suddenly appeared on the glass today. Does anyone know what it is? There is also TINY white dots EVERYWHERE and they seem to move. The water is usually really clear and seemed more cloudy than normal...lots of tiny things floating around. I saw the sea slug shooting some cloudy stuff out about 5 times...is this maybe related? If not, what the heck is he doing? I have no idea what kind of sea slug it is...it came on some coral.

 

[R3verb]

do you have nerit snails? Those little white things may be nerit snail eggs. They suck lol

 

[Shnooks1215]

No, we don't.

 

[R3verb]

hmmmm. that was my only idea.

 

[Bifferwine]

Those look like the tubes that little dusters build. Whatever it is, I don't think it's anything to worry about.