*May exclude certain brands.
**May not be combined with any other offer.
Code expires 12/13/13
Hydor Koralia 4 Impeller and Hydor Controllable Koralia 4 Impeller replacement part. Over time the magnet around the impellet shaft can get damaged by sand, debris & other particulates. To ensure optimal flow it is important to routinely clean your impeller and replace if the magnet or fan is damaged.