when I got mine two canisters had  hairline cracks on the top edge that caused it to leak/drip and  at that time the middle canister would not stay full after cycling  - they replaced  it with new canisters and no leak and all canisters are full  when its not running.   I think it was a pressure loss from the leak that caused  the drop in water level in the canister -just a guess. 
		
	
		
		
		
		
			
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				CAD 22 
 
brent
			 
		
		
		
		
	
		
		
	
	
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