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					Originally Posted by  imisky
					 
				 
				i would stop using GFO once the bio pellets are on as bacteria utilizes NO3 and PO4 + carbon source to grow. Once GFO sucks out all the PO4 the NO3 will stop being utilized and you'll get a build up of NO3 overtime. 
			
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	Quote:
	
	
		
			
				
					Originally Posted by  OceanicCorals-Ian-
					 
				 
				What he said.   
			
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 hmmm..so a tank needs to have both PO4 and NO3 for this product to work? Can NP pellet consume all of PO4 before NO3 being completely consumed in a tank? What will happen if that is the case?