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Fractionating Impeller for Mag Pump Replacement?

MolaMola

Supporting Member
Danner/Supreme Mag pumps sells this fractionating impeller. Is it a suitable replacement for regular impeller? I think I already have one in my go-to salt mixing/water transfer pump and have not noticed a difference but I am too lazy to open it up and see if that's what's in there.
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Is that for foam fractionating (aka protein skimmer)? It would work for normal use but you’d be wasting energy on the turbulence.
 
When I look for replacement impellers I see that fractioning one a lot, sometimes exclusively. Didn't know if it was the new thing or had something to do with skimmers. Thanks.
 
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