![]()  | 
	
| 
	 | 
| 
		 
			 
			#1  
			
			
			
			
			
		 
		
		
	 | 
|||||
		
		
  | 
|||||
| 
	
	
		
			
			 Well there aren't a huge amount.. and I'm actually not convinced they're sticking on the corals either. I fiddled with the system today and I think I reduced the bubbles, though they're not gone... they're coming from my sump pump, or from somewhere in that return line. 
		
	
		
		
		
		
		
	
		
		
	
	
	 | 
| 
		 
			 
			#2  
			
			
			
			
			
		 
		
		
	 | 
|||||
		
		
  | 
|||||
| 
	
	
		
			
			 I was wondering about microbubbles recently too, as I'm getting them from my canister filter. I did a search here on Canreef, but couldn't find an answer, one way or the other. I did another search elsewhere (Google? I forget.). Anyway, I found this: (Myth #14). 
		
	
		
		
		
		
			http://www.reefkeeping.com/issues/2004-01/eb/index.php Cheers, 
				__________________ 
		
		
		
		
	
		
		
	
	
	Mark.  |