Most people use tannins in their maruloides setups to  'tan' the fish and sometimes they go for waterchanges without months.I saw a japanese blog recently ,the writer hadn't changed the water in his maruloides tank in 2 years (i'm not sayjnb you should attempt this).Nitrates can be controlled with a planted tank,so no need for excessive  water changes.
				
			 
	 
	 
 
		
 
 
		