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			#1  
			
			
			
			
			
		 
		
		
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			 you should check nitrites as well, might just be a passing bloom 
		
	
		
		
		
		
			
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	a tout le monde, a tous les amis. je vous aime, je dois partir.  | 
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			#2  
			
			
			
			
			
		 
		
		
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			 I would run some carbon for a few days. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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			#3  
			
			
			
			
			
		 
		
		
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			 Are you using tap or RO water? 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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			#4  
			
			
			
			
			
		 
		
		
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			 Any chance that you triggered a precipitate snow storm? 
		
	
		
		
		
		
		
	
		
		
	
	
	Shane  | 
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			#5  
			
			
			
			
			
		 
		
		
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			#6  
			
			
			
			
			
		 
		
		
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			 Okay.  The facts so far 50% water change with tapwater.  That's a pretty big water change.  You probably have a bacteria bloom from the declored tapwater due to the fact that Edmonton's tapwater is treated chloramine.  Chloramine is a compound consisting of ammonia and chlorine, with about 1 ppm ammonia. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
	We had a recent discussion on chloramine in Edmonton's tapwater here.... http://www.canreef.com/vbulletin/sho...light=ammonium Instead of waiting for a bigger tank, you should invest in an RO or RO/Di unit, or else use RO or distilled water from the grocery store for water changes.  | 
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			#7  
			
			
			
			
			
		 
		
		
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 ![]() Also if there was a problem using tap water wouldn't it have shown up early, not after 4 months?  | 
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			#8  
			
			
			
			
			
		 
		
		
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			 Quote: 
	
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