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Sincerely Your, SURF3DMORE INFORMATION ABOUT 3D MODELS :A centrifugal fish feeder is a mechanical device that uses a centrifugal fan to drop feed into a large cage or pond. The feed is projected in a wedge-shaped pattern using a high-velocity air blower systemA centrifugal fish feeder is a device that uses a tube that rotates and spreads feed based on airflow. It's a good solution for tanks in fresh or sea water