or you can use the " tap water purifier" made by aquarium pharmaceuticals. Attaches to your tap and makes perfectly clean water. 
 
Not as cheap as a real r/o unit, but for the time being should work good.
  
about $50  and should make a couple hundred gallons of water.
 
 http://www.jlaquatics.com/phpstore/s...ct_ID=ro-aptwp 
		
	
		
		
		
		
			
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				Last tank was 210 reef with 90 gal sump 
 
120 , lps. 2xKessil A350W Tuna Blues, 2xvortech mp40 for flow,aqualogic 1/4 hp chiller, 160 lbs live rock. sohal, , pair of percs,flame dotty back , royal gramma, pair of black percs, niger trigger, mandarin  
  
55 corner bowfront freshwater, African cichlids kessil a350 
  
30 gal 36x36 coffee table fish tank. 3 red ear sliders. 
  
5.5 gal nano, live rock, arrow crab, baby perc, firefish.
			 
		
		
		
		
	
		
		
	
	
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