Do the sensor lights go out if you manually move the float on either sensor?  What if you unplug a sensor?  Have you tried pulling power from the ATO and plugging it back in? 
		
	
		
		
		
		
			
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				72g bowfront, t5. 
29g JBJ nano cube, ATI 26HD. 
 
Livestock: clown fish, chromis, coral beauty. 
 
Corals: Toadstool, maze brain, candy cane, mushrooms (purple & green hairy), button polyps, green zoas, GSP.
			 
		
		
		
		
	
		
		
	
	
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