Chasing pH is a dangerous game. 
 
If you have aragonite based substrate, live rock, and use good buffers then there is no reason in my opinion.  
 
It is important when using Kalk or a Calcium reactor but that is about it. 
 
If you are using 2 part you just need to check your salinity... 
		
	
		
		
		
		
		
	
		
		
	
	
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