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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.  
