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					Originally Posted by  tang daddy
					 
				 
				Also what lights do you run with your set up, old bulbs and exhausted rodi filters may fuel the cyano.... So I've heard. 
			
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 If you are asking me, I run Radion LED's, set as described in an earlier post. I used to have T5's with old bulbs when I started out, so that probably didn't help. I have a very good RODI system that auto tops off my sump with 0 TDS water.