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			 Just removed all my pre-filters today from the pumps, the only one I left on was to baffle the sound of the skimmer exhaust.  I noticed they were all covered in a green and brown crud. I clean them regularly, but I am pretty sure they are doing more bad then good.  What are some of your opinions on this?  Do you guys leave them off or on? 
		
	
		
		
		
		
			
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	'07 BMW 335i twin turbo '00 Ford Excursion 12" Lift on 38's '91 Acura NSX I/H/E '02 Regal 1900 LSR '07 110 Gallon with too many mods to list!  | 
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			#2  
			
			
			
			
			
		 
		
		
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			 you mean like the sponge prefilters?  I've never used them, I hate cleaning them and would never stick to any kind of schedule so I just left them off.  I did use intake guards on my pumps though as I used to have fish ride the overflow into the sump. Since I've installed a stockman pipe I've taken the guards off.  
		
	
		
		
		
		
			
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	Christy's Reef Blog My 180 Build Every electronic component is shipped with smoke stored deep inside.... only a real genius can find a way to set it free.  | 
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			#3  
			
			
			
			
			
		 
		
		
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			 Hey Christy,  what's a stockman pipe ? 
		
	
		
		
		
		
			
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	-captainhemo  | 
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			#4  
			
			
			
			
			
		 
		
		
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			 Its basically a more "compact" design based on the durso style pipe.  This one is for overflow boxes that have a tighter fit in them.  This website has photos that explain it better than I can in words  
		
	
		
		
		
		
			http://www.rl180reef.com/pages/stand...n_stockman.htm 
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	Christy's Reef Blog My 180 Build Every electronic component is shipped with smoke stored deep inside.... only a real genius can find a way to set it free.  | 
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			#5  
			
			
			
			
			
		 
		
		
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			 I run a prefilter on the maxi-jet that runs my phos reactor.  I have a HA problem at the moment.  The prefilter keeps the reactor from clogging every couple of days.  I run everything else without. 
		
	
		
		
		
		
		
	
		
		
	
	
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