Question: 
The airline valve on the RS250 I run on my Trigger Tank frequently gets plugged quickly. I'm not sure exactly what it is. I don't dose Ca in this tank, but the substance's texture seems calcareous (sp?) and is a dark grey. Maybe it's a mix of Ca from the LR and nutrient sludge. 
Anyhoo, I'm wondering if anyone out there runs their EuroReef without that stupid valve at the end of the airline. I have the valve on mine wide open all the time so I'm thinking why not just take it off and then maybe it won't plug up as often. 
  
Thanx much, 
		
	
		
		
		
		
			
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				Mark.
			 
		
		
		
		
	
		
		
	
	
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