Crushed coral is heavy and bulky. I can't think of anything suitable that would go through it except maybe a horseshoe crab but they're not really good for our tanks.
I can't see a blenny really moving too much crushed coral around. perhaps a large pistol shrimp? Even then it's going to stay in one general area.
Good luck.
Last edited by JustPhish; 10-03-2007 at 04:06 PM.
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