What do I do?

[AquariumDani]

I have some corals in the sand because they need low light and my snails keep knocking these corals over, and they're getting stressed.What can I do to stop this from happening?

 

[ScottR]

I have some corals in the sand because they need low light and my snails keep knocking these corals over, and they're getting stressed.What can I do to stop this from happening?

Maybe get a small rock, use cyanoacrylate super glue and glue to the rock. They should stay in place.