A pond surge aerator is a mechanical device that pumps water into a pond or lake. Some models are free-standing, floating, or fixed to a dock or pier. Submersible models can be mounted to floating platforms, fishing piers, boat docks, or even stumps. These devices work by discharging bubbles into the water as they move. The angle of the motor is adjustable to match the depth of your pond.

Diffuser-air systems are most effective for deep ponds, because the bubbles hang in the water for a short time, but they don't disperse oxygen as much. They're also not the most suitable option for large ponds, because diffused-air systems require a long tubing network and numerous diffusers. They're best suited for ponds less than 0.25 ha, but can also be effective in complexes of many small ponds. For example, one air blower can supply diffusers in several ponds.

Lastly, vertical pump aerators have an aerator mechanism that uses a submerged motor to lift a dome of water into the air. These pumps are usually mounted on floats and secured by ropes or wires. They work well in shallow ponds, but their shallow-water operation limits them to shallow ponds. However, paddlewheel aerators are useful in shallow ponds. The pumps are evenly dispersed around the pond.

The amount of feed added by a pond surge aerators depends on the feed rate. If you feed a 1,000 kg/ha of tilapia, the aeration rate can be reduced to 0.5 hp/ha or even less. Alternatively, if you have a shrimp pond, you can reduce aeration after midday. In both cases, the amount of feed will decrease to allow for shrimp to live in the pond.

Paddle wheel aerators are the most efficient and popular aerator type, providing more oxygen for the dollar of electricity spent. They work by creating waves in the water that desaturate harmful gases. This happens when the oxygen concentration in the water drops below the point where organisms begin to suffer. Stressed organisms often exhibit decreased growth, altered reproduction cycles, and reduced resistance to disease. Therefore, it is important to maintain an oxygen saturation level above 70% to prevent stress-induced changes in the organism's growth.

A pond surge aerator is an important part of a healthy koi pond. It increases oxygen levels in the water, helping the fish and other animals to live and flourish. The aerator also reduces unwanted odors and mosquitoes. In addition, fish pond aerators help prevent the spread of harmful bacteria. There are also accessories to support the aerator, such as aerators and additional pumps.