I guess I could just have a rubbermaid container beside my tank with a pump and check valve?  I have never set up anything like that before.  How would the pump be able to come on and off?  Or would you have it on a timer?  So many questions but I really do have to set up some kind of top up system. 
		
	
		
		
		
		
		
	
		
		
	
	
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