A paddle wheel aerator can produce more oxygen with less power consumption. The aeration rate depends on the surface contact between air and water, the film surface coefficient, and turbulence. Size, geometry, and wheel velocity all affect aeration rates. Larger size tends to increase aeration, but higher size results in higher driven power and drag force. These additional costs can reduce the economics of aeration.

Another common use for a paddle wheel aerator is in aquatic farming. Whether used for aquaponics or fish farming, these units are a must for aeration. They provide good aeration as well as tremendous splashing and flow of water. They are very easy to install, transport, and maintain. Paddle wheel aerators can be a great addition to any pond or aquarium, providing the proper environment for plant growth.

Paddle-wheel aerators are an important requirement for fish and shrimp farming. They look like miniature versions of the paddle wheels used on steamers on the Mississippi River. When operating, the paddles turn in a vertical plane, causing oxygen to mix with water. They also create a wake up to 50 meters. These aerators can increase water oxygen levels by as much as 50%. However, this can be problematic for some aquaculture operations.

The oxygen demand in a catfish pond can range from 100 to 200 pounds per hour. The oxygen demand is mostly satisfied by sediment and plankton respiration. Good paddle wheel aerators can transfer 1.5 to 2.5 pounds of oxygen per horsepower of energy input. On average, paddle wheel aerators require between 2.5 and 8.5 horsepower per acre. A good paddle wheel aerator can aerate up to 15 acres at a time.

Tractor PTO-driven paddlewheels are typically powered by tractors with PTO power ratings of 45 to 60 hp. Larger tractors may be needed for moving the aerator up steep levees. However, these power sources are not energy-efficient, as they use most of the fuel to run the tractor, while turning the paddlewheels. The most efficient operating depth is between 1,200 and 1,500 rpm for most PTO-driven paddlewheels.

The  floating paddle-wheel aerator produces large flow patterns. These large flow patterns increase oxygen transfer and horizontal mixing. This is why Monsoon paddle-wheel aerators are ideal for aquaculture. With a range of speeds from 5 to 30 horsepower, these machines can be used individually or in groups. The high-speed spinning impellers are also extremely effective in removing contaminants from water.

Paddle wheel aerators are also useful for addressing oxygen stratification in ponds. A 2.5 hp circulator can help decrease the formation of sulfides, a symptom of anaerobic conditions. The paddlewheel aerator is a popular choice for aeration. They can be used to mix the water in shallow ponds, but do not work well in corners.