Good Substrate Cleaner for Coarse Substrates?

[capnbob]

Howdy,
I've recently realized that my nassarius snails aren't able to sift through my sand because it's too coarse and they can't get into the sand. They just cruise around the top of the sand. I have mostly crushed coral with a bit of live sand mixed in (I know, this is a bad combo, I'm working on taking care of this...)
Anyway, does anyone have a suggestion for a critter I could put in my tank that can bulldoze through and clean really coarse substrates?
Any suggestions are much appreciated,
Bobby

 

[1journeyman]

Umm, good question. I think any snails, crabs and cucumbers can be ruled out. CC is too sharp and too big for them.
Good question..

 

[stanlalee]

most crabs and shrimps have no problems at all with crush coral.