Crabs munching cucumber?

[naesco]

Originally Posted by banditpowdercoat

I just may do that. Starting to get more snails, and will need to get a bunch more soon. Want some mantis food LOL. Thought about in my sump, but its too small.

The reason your xenia got eaten is the hermits are starving. They will also eat every thing else in your tank that is edible including your snails which you notice are disappearing.
They will also eat the tiny critters that coral require for nourishment.

There is also no way your snails will survive in your tank unless you are providing supplementary algae.

Return all the snails and hermits to the LFS that you purchased them from except for a couple of each.

Thanks