About 15 months here. Epoxy & aragonite mix on the bottom separated from glass by cellophane. I'm still fighting algae on it near front & center, but some patches of coralline are emerging, I'm hope full. 
I don't think there is a way of maintaining sand look. 
This mix is actually still porous, so cleaning only goes so far. Also I got a middle lifting up (about 3/4") as it's not really attached to the bottom and (as seen elsewhere) this thing layers of epoxy have tendency to curve. 
Long story short I recomend starboard to the BB crowd if you just want to protect the bottom. 
I'll post some pics later, time to feed the kids. 
		
	
		
		
		
		
			
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				Denis
 
150g SPS reef;3x250WHQI,Tunze Streams,Wavebox,Neptune Apex,fishroom in basement   ,reefing since 93,SPS since 99.
 TOTM June 2010
			 
		
		
		
		
	
		
		
	
	
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