id please polation explosion

[becon776]

ok small flat disc. light in color. ~3mm

at first glance thought it was coralline algae starting to come in. the i looked closer. these little circles are everywhere. a couple on back glass tried to scrape off to look under some magnification but just sort of fell apart. ??

 

[KJ]

Look like Nerites eggs.

 

[becon776]

ok that would make sense. never really had nerites and just added a big pack a minth ago from reefcleaners