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					Originally Posted by Delphinus
					
				 
				
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					Originally Posted by monza
					
				 
				Don't think that a closed loop guarantees you can plump low and not have your tank drain. 
			
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 I don't think anything is really truly foolproof.  Every idea has pros and cons, risks and rewards.  I would hope that the likelihood of a pipe leak is less than that of a power failure/interruption.  So I think a closed loop is  less risk than a sump return; but I agree that it's not  zero risk.     
			
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 don't discount the possibility of a bus hitting the tank during a water change.  
		
	
		
		
		
		
			
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				Given sufficient thrust pigs will fly just fine. 
 
90 Gallon LPS tank - Challice, Acans, Favia, Diplo and Zoos 
125 Gallon SPS Coming Soon!
			 
		
		
		
		
	
		
		
	
	
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