They are designed to move water horizontally and increase the water's oxygen content by bringing the deeper low-oxygen water up closer to the surface.Propeller-Aspirator-Pump Aerators:（https://www.chinaaerator.net/product/water-plowing-aerator.html） These Aquaculture aerators function by propelling water together with air into the atmosphere, thereby intensifying oxygen absorption. They are the best choices for deep-water ponds.Diffused-Air Aerators: Also known as bubble aerators, they transport oxygen to the bottom of the pond where it’s needed most. They work by producing large volumes of small bubbles that rise slowly, allowing more time for oxygen to be absorbed into the water.Vertical Pump Aerators: Vertical pump aerators work by thrusting large quantities of water vertically, exposing the water to the air for oxygen absorption.