Aqua One Impeller Set - MariSys 240 411i

A brand new Aqua One 411i Impeller to fit the Aqua One MariSys 240 and Aqua One Marisys Pro under tank Marine filters. It’s a simple five minute job to change this impeller and well worth doing as it’s the only moving part in the whole filter and subject to a fair bit of wear and tear as it spins at thousands of revolutions every minute of every day. Change once per year for constant quiet filter performance. Keeping a spare impeller for your filter is one of the smartest things you can do to protect the health of your live stock.