Yup, I would try reaquascaping and get away from the "rock wall" look. Maybe a couple of island. Then add a couple of colourful hardy corals, like bright green star polyps, some frogspawn/hammer/torch, maybe red open brain for the sand bed. I also use red macroalgaes in my tanks with no tangs to add a splash of colour (red halymenia & gracilaria) but these like regular dosing of iodine (Lugol's solution) to stay healthy I find. 
		
	
		
		
		
		
			
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