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					Originally Posted by  Raul-7
					 
				 
				And do you know when you will have the plug-in dimmer module so I don't have to throw away my ballasts and buy dimmer ballasts? 
			
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 Bump. 
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					Originally Posted by  niloc16
					 
				 
				yes raul7, the controller will do that.  at any set time you would like it to. 
			
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 Thanks. But is there a risk the optical sensor can fail (for example, piece of debris covers it or algae) and then overflow the tank?