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					Originally Posted by  Ryanerickson
					 
				 
				He's talking about a carbon source not black charcoal for water clarity. A carbon source will feed bacteria. A example is np pro by aquaforest with this you would be feeding bacteria that will help reduce phosphates and nitrates your bacteria source would be aquaforest pro bio-s. I'm using aquaforest as a example there's many other carbon and bacteria products. 
			
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 H Ryan,  I have found the pro bio-s at J & l but it doesn't look like they carry the np pro.  Just wondering where you get yours from?  Would I need to dose anything else to get the tank balanced again?  I have got my phosphates down to .5 now but I have been getting cyano off and on over the past year so I think that I do need to do what you and Warriordog have suggested to get the tank balanced again.