I have added 4 smaller pieces of live rock that I have been "cooking" for several months.  I treated the rocks with a peroxide dip to remove any remaining unwantables.  These rocks came from a phosphate rich tank.   Hopefully they slowly leach some phosphate into the tank to help manage my 0 phosphate issues.   
 
I will keep you posted, fingers crossed. 
		
	
		
		
		
		
		
	
		
		
	
	
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