Kalk dosing cont....
			 
			 
			
		
		
		
		Hi, 
 
I have a maxijet running in externally for about a year.  There is an o-ring (similar to a Mag) that forms a seal between the impeller cover and the main powerhead assembly.  The o-ring should be periodically inspected since they do harden and leak over time.  Some silicon should fix the problem if you don't want to buy another o-ring. 
 
- Victor. 
		
	
		
		
		
		
		
	
		
		
	
	
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