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			#1  
			
			
			
			
			
		 
		
		
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			 Can anyone tell me what actually causes kH to decrease? 
		
	
		
		
		
		
		
	
		
		
	
	
	June 16th my kH was 10.0 June 21st my kH was 6.0 That's a rather large decrease in 5 days in my opinion? Maybe it's not? Test kits have been verified as good by JL. So, what are the causes of decreasing kH?  | 
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			#2  
			
			
			
			
			
		 
		
		
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			 I chalk up my falling KH to coralline growth on my new LR 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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			#3  
			
			
			
			
			
		 
		
		
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			 - Adding too much Calcium supplement 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
	- Excess CO2 in the air - Critters using Ca for growth - Excess nutrients - Overdosing alkalinity RELATIVE to calcium If you haven't already read this article and then read it again and once more for good measure. I suspect your problem is "Zone 3". http://www.advancedaquarist.com/2002...stry#section-1  | 
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			#4  
			
			
			
			
			
		 
		
		
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			 What about overstocking of fish? 
		
	
		
		
		
		
		
	
		
		
	
	
	Does that cause a decrease?  |