The AquaClear Impeller Assembly is a replacement part for the AquaClear 70 Power Filter. The AquaClear 70 Power Filter features a unique multi-stage filtration system that provides complete mechanical, chemical and biological filtration for superior water quality. Regular filter maintenance should be performed every 3 months. Pull the impeller out of the impeller well and rinse to remove accumulated slime deposits. AquaClear creates a wide variety of products for freshwater tanks such as fish tank accessories, fish tank decorations, and aquarium filter media that is perfect for large and small fish tanks.