i REALLY wouldn't hook your RO/DI to your tank.  hooking your tank to a continuous water supply can cause nasty problems if a float switch fails. 
 
You could instead set up the RO/DI to a resevoir that holds say 10 gallons, then top off from the resevoir into the tank using something like a tunze osmolator or a JBJ auto top off.  cuts your chance of problems down in half... 
 
if the JBJ/tunze top off fails you have only like 10 gallons dumped into the tank.  if the RO/DI fails you have water all over the floor but your tank will be ok. 
 
I just make a bi-daily chore of hauling water to my tank's top off resevoir (JBJ auto top off). 
		
	
		
		
		
		
			
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				Everything I put in my tank is fully dependant on me.
			 
		
		
		
		
	
		
		
	
	
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