I would raise the skimmer up a few inches and check your air line to make sure its not clogged. You should maybe check the mesh wheel also to make sure there is no blockage. Mine was plug and play and had no issues.  
 
Let me know if any of that helps  
 
Cheers 
Ray 
		
	
		
		
		
		
			
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				60" 120G project-DONE!!!!
			 
		
		
		
		
	
		
		
	
	
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