NAL Posted January 14, 2009 Share Posted January 14, 2009 I noticed I have been running a needle impeller instead of the pump impeller in my ocean runner for my return pump. I bought it used, and the person neglected to tell me it was for a protein skimmer. So I wonder how much more flow I will get with I put in the proper impeller. How stupid am I for not realizing there was a difference? Link to comment
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