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					Originally Posted by mrcopitr
					
				 
				Hi , 
 
Can someone tell me if the use of Carbon in a reef, has an impact on the PH level.  It seems when I use carbon that my PH drops substantially. 
 
Does the carbon remove the Kalk...???  If it does this could explain the droping PH... 
 
Thanks and Happy New Year!!!! 
 
Marco 
			
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 I never thought of that. My PH has been on the low side, and I am using carbon. I have been trying to bring it up by using baking soda without too much success. Perhaps a more knowing person can confirm this interaction between carbon and ph.
Michael