For the past three days i notice a slight change in my skimmer. i feel that it is not as "bubbly" as it had been; as a result, i notice that the collection cup is not as dirty. i have an interior and exterior pump that are both working as well as an air contraption, also working. Any ideas or help????  Thank you!!!
Joe
	
		
			
		
		
	
			
			Joe
 
					
				
