I have 4 or 5 hermits and 2 or 3 bumblebee snails and I've never had an issue with any of them in my 30 gal.... 
		
	
		
		
		
		
			
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				-Mark 
 
29 Gal Bowfront w/24" LED Lights. DIY HOB Sump (5.4 Gal)  MP40. Orange Spotted Watchman Goby, 2 Clownfish and a few hermits.
			 
		
		
		
		
	
		
		
	
	
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