Christy I bought a RO unit from Andrew Sheret Co. here in Nanaimo. It is a 50GPD and it cost about $280.  It hooks up to the sink so that I can drink the water too.  if you just want it to be for you fish tank you can hook it up inline to your tank.  They sell a higher GPD unit for a little bit more $$$.  They are really easy to hook up if you were doing it yourself. 
		
	
		
		
		
		
		
	
		
		
	
	
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