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					Originally Posted by  Myka
					 
				 
				Sorry, I don't like any of them.  I like disks.  My next pick would be #4, but only if it fits into eggcrate and standard racks - it looks kinda big. 
			
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 I'm with you. I only use plugs to temporarily hold in a rack, and then it gets mounted to rock. I suppose if you don't mount frags and prefer the colonies to be movable, then the others have merit.