Property owners who have lakes on their land often assume that these natural features will be able to take care of themselves just fine. Unfortunately this is not always the case. Although some large ponds and lakes are able to sustain an ecosystem complex enough to provide for the needs of native fish, turtles, and other water-dwelling animals, naturally regulated lakes often suffer from unsightly problems. These include surface algae, duckweed, and insufficient oxygen during winter months, leading to fish die-offs.
While surface aerators may be an effective solution for backyard ponds, they simply won’t cut it for full-sized lakes that are five feet or more in depth. It’s important to purchase specialty lake aerators for these larger-scale applications. They are designed using diffused aeration systems that are intended to ensure adequate aeration throughout the entire pond or lake.
The main difference between these two types of systems is that while surface aerators draw in oxygen through the surface of a pond, diffused air systems draw it down to the bottom and release it where it will do the most good. There are a variety of diffused aeration systems on the market, and choosing the right one is primarily a matter of accommodating lake size. Expect prices to differ substantially between diffused aeration systems designed to work in an 1/8 acre pond and those intended for use in larger lakes that are measured in full acres.
When it comes to power supply most property owners opt for conventional electric motors. These run quietly and are designed for continuous use. However, those who need to aerate lakes in remote locations will be glad to know that solar and windmill powered systems are also available. These produce 100% of the power required to keep compressors and diffusers running continuously. Some property owners choose solar or wind power for its long-term cost advantage. While a conventionally powered system may require less of an initial investment it will need to be powered continuously. This cost can add up quickly. Solar and wind powered systems are completely autonomous and generally require only routine maintenance and occasional repairs to continue running at peak efficiency for years to come.