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			 I don't know about a sealed sump. But if you drilled a small hole above the waterline in your return, if the power went out it would break the siphon so you wouldn't overflow the sump. (if thats what you're worried about??). 
		
	
		
		
		
		
			Can't wait to see some pics! 
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	Christy's Reef Blog My 180 Build Every electronic component is shipped with smoke stored deep inside.... only a real genius can find a way to set it free.  |