ElGuappo: Its a costum made sump in acrylic, there is a refugium on the top and an sump on the bottom. Its save me space overall    Not the best picture to show the sump, but you get the idea   
  
		
	
		
		
		
		
			
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				420G Front Starfire Glass Reef Tank, 150G Costum made Sump, Sifligoi 3x400W + ACLS Unit, 2xH&S A200-2x1260, Schuran Jetstream 2 Ca reactor, 4xVortech pump, 3xBattery Back Up, 4xWavy Sea+, Prolifux Wireless Controlleur, Oceans Motions 4 Ways, Seachem Pinnacle 200GPD RO/Di
			 
		
		
		
		
	
		
		
	
	
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