When I use Aptasia-X I cover most of the aptasia with the solution.  In about 1/2 hour the aptasia has mostly melted away.  It definitely does not come back.  On some of the bigger ones I don't get enough on them and have to come back and treat them again.   
 
My new tank that I am setting up is going to have sterilized rock.  There is not going to be any aptasia in it! 
		
	
		
		
		
		
			
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				75 Gal. display with 40 Gal sump - Dual 1.5" drains, Aragonite sugar sand substrate, SWC Extreme 250 Cone Protein Skimmer, 1800L return pump, 4 AI SOL LED Lights, 250 ml pellets in a recirculating bio-pellet reactor, BRS Doser pumps for Calc & Alk, Tunze Osmolator Auto Topoff system connected Vertex Puratek RO/DI.
			 
		
		
		
		
	
		
		
	
	
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