I had a few patches of the red slime algae in my 90 gallon.  It seems like it only grew in low flow areas.  I have some of the same rock in my new 20 gallon but have twice the turnover and no more red slime.  Just what I observed, might not be related. 
- Chad 
		
	
		
		
		
		
			
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				Returning to the hobby after an eight year absence.
			 
		
		
		
		
	
		
		
	
	
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