Pest eggs on coral skeleton

[SOGavity]

After knocking down my aquascape and putting it back together, I found a cluster of eggs on the bottom skeleton of my frog spawn. The eggs are about a millimeter in size, pink, and there were hundreds. As far as I can tell I do not have a pest issue in my tank. I have a few that are harmless and good filter feeders but nothing like flatworms or aptasia. Also, it's not on any other coral. This isn't a new to me coral either. I've had it along time.

 

[Rocks reef]

Do you have snails?

 

[SOGavity]

I have cerith snails, nassaruis snails, astrea snails, fighting conch, turbo snails, spiny trochus snails, money cowery. And hinestly... I've seen a decline and have been thinking of getting more to replace the ones I've lost.