frsh O2
			 
			 
			
		
		
		
		I need a way to b able to get some frsh oxygen to my tank,m i know this sounds silly but, it seems thati have high co2 levels in my house or at least in my basement. Do furnances have fresh air intakes?? O r am i looking at haveing to drill a hole to the outside of my house to bring in frsh air?? 
 
 
 
Adie 
 
 
 
Any and all ideas appreciate. 
		
	
		
		
		
		
		
	
		
		
	
	
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