Thanks crusti, that helps.  
Thanks for the link. 
Steve, the only reason the the CA is so high is, I use additive every 2nd day, thought I could use the reactor to get it up to 420-440, and forgetabout the additive?? Kinda sems you give up one additive just to replace with another?? 
Thanks guys the info is appreciated. 
Mark 
		
	
		
		
		
		
			
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				Mark
			 
		
		
		
		
	
		
		
	
	
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