Pondmaster Mag 3-5 Fractionating Impeller Assembly can be used to replace the stock impeller for a Mag Drive 3, Pond Mag 3, Mag Drive 5 or Pond Mag 5 pump. When this impeller is used in conjunction with the Pondmaster 2-7 Venturi Assembly, the pump can be used effectively with a protein skimmer or for aeration.
