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			#1  
			
			
			
			
			
		 
		
		
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			 Participate in this post for your lighting use. 
		
	
		
		
		
		
		
	
		
		
	
	
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			#2  
			
			
			
			
			
		 
		
		
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			 Hmmm.  If you have multiple tanks, how should a person respond?  One could respond with totals over all tanks, or perhaps just take one tank as an example. 
		
	
		
		
		
		
		
	
		
		
	
	
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			#3  
			
			
			
			
			
		 
		
		
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			 Hello, 
		
	
		
		
		
		
		
	
		
		
	
	
	Just take one sample tank.  |