yes it help expand the quantity of kalk you use lower the PH of the solution when I forget to refil the reactor for two day the calcium and  alk get to low so I do a mixture of 30 ml of vinergar in on teaspoon of kalk mix it in a glass  and put that ting in the tank  
 
Dont do it at home until you realy know what you doing 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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