Best sand sifter for sand bed

[likwid]

Hey guys,

I am wondering what the best sand sifter would be for my sand bed. I am using Carribsea Arag sand, it isn't quite crushed coral but it isnt fine either. What could I use to keep the sand nice and clean and always as white as can be? I have a bunch of Nass snails but they just stay under and nothing ever sifts the surface.

Thanks