Sand Sifter for Aggressive Tank

[Celebrian]

Hi. Could anyone recommend something that would be a good sand sifter for my aggressive tank? My main concern is something that will be big enough so that my fuzzy dwarf lionfish will not be able to eat it. Other than the lionfish, there's a couple of sea urchins in the tank and a yellow tang that probably won't bother anything.

[wildcrazyjoker81]

Shouldn't have any issues with larger tiger or fighting conches.

[mling]

Does anyone have a shifting sand star fish in their aggressive tank ?

Should be safe with a Lion, right ?