if you put out some money for even another 50lbs of rock, and/or get a bigger system for more dilution, I bet it would have a major impact 
 
I added another 100lbs of rock to my system about 7 months ago, and i've done about 3-4 water changes since then, and I've never seen any algae 
		
	
		
		
		
		
		
	
		
		
	
	
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