pH probes are generally shipped with a neutral cal solution 
Not sure about the redox ones 
  
Nice work on the sump ... just one question 
What are your plans for circulating the fuge water ? I only see a dam wall ... 
Are you planning on a small pump to feed it ? 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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