Sounds like your skimmer may be inadequate, too. And the output of your bio-pellet reactor should feed into your skimmer for best results. 
 
There are a lot of factors that need to be right for bio-pellets to work properly. But if one or more are missing or inadequate, your results will be disappointing. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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