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					Originally Posted by kien  I guess if you're not neurotic about keeping the floor of your sump clean like I am, then they're fine :-)  I try to vacuum out every inch my sump floor during every water change.  Probably not necessary though.  I have to remind myself that not everyone is as neurotic as I am.    | 
	
 Well I guess your tank always shows the fruits of your labor so you're doing something right!