I think I was looking at astrea snails previously and heard many good things about them... the only thing bad I heard was that they can not tip themselves back over if they end up upside-down.  As for the shrimp I think we will only stay with the cleaner shrimp (maybe get one additional one as all they had was one left at LFS). 
 
I think we will stay away from crabs for now as we would like to keep our snails.  Looking at possibly adding a dragon goby to sift thru our sand bed.  As for the rest we are looking to slowly add more to the tank and trying to take our time (very hard). 
		
	
		
		
		
		
		
	
		
		
	
	
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