Whoa that sucks. 
 
But maybe something else is awry? 
I'm new to controllers and I'll tell ya there's quite the learning curve and I found it quite frustrating to figure out on my own. 
 
For my set up, my top up reservoir (brute can) has a water level higher than my sump, so although the ATK comes with a check valve, I needed to get the solenoid to make it work properly. 
		
	
		
		
		
		
			
				__________________ 
				- S H A O -
			 
		
		
		
		
	
		
		
	
	
	 |