I use it as well. Or I WILL use it. I've got a Fluval Edge set up with saltwater. I am currently using Chemipure and it holds my PH very well. Just filter floss and Chemipure. I had bought some Chemipure Elite, but it was slightly larger than the regular Chemipure and therefore wouldn't fit in my stock filter...I found a 1/2 bag size of Chemipure Elite and will put it in when it's time to change out the filters. I should mention that I've only had my tank up since Feb 1. and only softies and LPS in the tank. 
		
	
		
		
		
		
		
	
		
		
	
	
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