You didn't catch the snail in the act? It would take a few days for a snail to do that artwork, wouldn't it? 
		
	
		
		
		
		
			
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				180 gal tank, 50 gal sump, PM RFCa6 Ca Reactor, SWC Extreme 250 1A Cone Skimmer, Tunz Osmolator ATOF, Aquacontroller Apex, Aquaillumination Sol Super Blue 6 x 75w Units, Acros/Softies/LPS/Mushrooms/Zoos, Purple/Powder Blue/Yellow Tang/3xBlue Chromis/2xTomato Clown/Lawnmower Blenny
			 
		
		
		
		
	
		
		
	
	
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