Pond Aeration Systems

Dissolved oxygen (DO) is vital for maintaining healthy aquatic ecosystems. It supports thriving fish and microorganisms and fosters water quality conditions that are resilient to nuisance weeds and algae. That’s why we recommend that most waterbody owners install a pond aerator. However, simply placing a fountain in the middle of your waterbody isn’t going to yield immediate results. Whether you’re a new waterbody owner or have an existing pond aerator that isn’t meeting your expectations, it’s important to understand that selecting and placing a pond aeration system involves careful planning and precise sizing. 

Before choosing a pond aeration system, it’s important to understand the lake and pond aerator options available to you:

The words lake and pond are often used interchangeably. While there is no formal definition, when we use the word pond we’re referring to smaller, shallower waterbodies, which include those designed to capture stormwater during rainstorms. This definition may also include natural ponds used for fishing and recreation on private land. 

When it comes to lake fountains and pond aerators, the general rule of thumb is to aim for about 1-2 HP per acre of surface area. Smaller ponds can benefit from as little as ¼ HP, while larger ponds naturally require larger or more powerful lake or pond aeration systems.

Two lakes or ponds with the same surface area can have vastly different aeration needs. For example, round ponds, where length and width are roughly the same, might be adequately aerated with a single floating fountain or surface aerator. Long, narrow ponds or irregularly shaped ponds often need additional units to ensure DO circulates throughout the entire water column, including coves and other hard-to-reach areas where water stagnates.

For waterbodies averaging 4-8 feet deep, surface pond aerators and fountains are excellent choices. The turbulence they create on the surface allows oxygen to fully circulate in the shallow water. However, in ponds deeper than 6-8 feet, submersed aerators may be necessary. These systems, which are most effective in depths ranging from 6-20+ feet, can be placed underneath fountains to maximize circulation and oxygenation.

Beyond sizing, goals and budget are also considered. For example, while some waterbodies may substantially benefit from a surface pond aerator, stakeholders might prioritize aesthetics. In such cases, both objectives can be achieved by combining a surface pond aerator with a decorative fountain or a fountain with a submersed aerator.

In terms of budget, larger units and those with higher Horsepower can lead to increased operational costs over time. Propelling water into the air with a fountain or creating a strong surface flow with a surface aerator requires more energy than pumping oxygen directly into the water with a submersed pond aeration system. Fortunately, professionals have the flexibility to be creative and can collaborate with you to strike a balance between your aesthetic preferences and budget constraints.

After installation, adjustments may be necessary to ensure the pond aeration system delivers the intended results. Regular maintenance checks can prevent clogged filters or damage to essential components, helping to ensure the longevity of your system.

It’s also important to keep your water clean with other sustainable solutions, including routine water quality testing, beneficial bacteria applications (think probiotics for your waterbody), nutrient remediation strategies, shoreline maintenance and restoration, muck and bottom debris removal, and aquatic weed and algae management. An integrated ongoing management program incorporates many of these solutions to keep your waterbody in optimal condition year-round.