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					Originally Posted by BCOrchidGuy
					
				 
				That's great Beverly, thanks for the input. I've started steering away from the hagan power heads because of corrosion on the shafts 
			
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 You mean the impeller shaft?  Hmmm... I haven't had any problems with impeller shafts, except when I've broken one, which taught me a lesson not to clean in there with a toothbrush   
 
If I leave the powerhead uncleaned for over two weeks, which is rare, the impeller and shaft, all the way to the very bottom, gets a huge slime build up.  I'm sure this impairs performance.  Even when I break down and clean it weekly, I notice an improvement in water movement when I plug the thing back in. 
I would imagine slime build up would be apparent in all powerhead impeller chambers if not cleaned frequently, no matter what brand they are.