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Why should I aerate my pond? | Ponds & Lakes Q&A

Q: Why should I aerate my pond?

Q: Why should I aerate my pond?

Marty – Crivitz, WI

A: We talk a lot about the importance of aeration – and for good reason. Aeration with the Airmax® Aeration System, which involves diffusing oxygen into the water below the surface,  benefits the quality of your pond or lake in myriad ways, including these top five reasons:

  1. Reduces Pond Muck: Aeration cuts the nutrient load, like pond muck and other decomposing debris, in your pond. How? The increased oxygen and water movement provided by aeration helps to encourage the colonization of beneficial aerobic bacteria. These bacteria are responsible for digesting and preventing muck and nutrient accumulation.
  2. Boosts Oxygen Levels: Aeration also increases the amount of oxygen in your lake’s water. Beneath the water surface, the diffuser plates release tiny bubbles of oxygen. They disperse and circulate throughout the water column, providing life-sustaining O2 to beneficial bacteria, fish and submerged plants.
  3. Eliminates Thermocline: Aeration circulates the water and eliminates thermocline, which is a stratified layer of water between the warmer, surface zone and the colder, deep-water zone. Bottom diffuser aeration churns and mixes those temperature layers. The tiny air bubbles force the cooler oxygen-starved water to the pond’s surface where it becomes infused up with O2. The warmer, oxygen-rich water then drops down, fueling the beneficial bacteria.
  4. Improves Water Quality: By reducing the pond muck, increasing oxygen and circulating the water column, your water quality will improve. You’ll see less organic debris, clearer water, and happier, healthier fish.
  5. Reduces Winter Fishkill: Aeration also protects your game fish in the winter. As organic debris decomposes in your pond, gases are released into the water column. These gases become trapped when your pond freezes over, which reduces the amount of clean oxygen. If enough oxygen is displaced, your fish will suffocate. Running an aerator pumps fresh O2 in the water while maintaining a hole in the ice for gas exchange.

Ideally an aeration system should be matched to your pond’s size and shape, and run all season. If you need some assistance with planning a system that is properly sized for your pond, let us help with our free aeration mapping service and we will guarantee the results.

Pond Talk: What benefits have you seen in your pond or lake after adding an aeration system?

Keep Your Pond Healthy All Year - Airmax(r) Pond Series(tm) Aeration Systems

 

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What is supercooling? | Ponds & Lakes Q&A

Q: What is supercooling??

Q: What is supercooling?

Aloma, Warroad, MN

A: Supercooling is uncommon, but it can occur in lakes and ponds, particularly in the northern states. Here’s what you need to know about it and how to prevent it from happening.

In the winter time water stratifies in pond and lakes without proper aeration when surface temperatures are extremely cold, creating what’s called a thermocline. A thermocline happens as warmer water about 39°F or so – sinks to the bottom, while colder water about 32°F or so – rises to the top. Very little mixing of the layers occurs, particularly in calm weather.

Supercooling could become an issue if you’re running a surface aeration system in shallow ponds with fish. The fish prefer to stay on the bottom of the pond in the warmer pockets of water during the winter. They’re in winter-hibernation mode, and all they want to do is be in a stress-free spot until spring.

As the aerator circulates the warmer water with the cooler water at the surface, the overall temperature could drop. In extreme cases when the temperatures are well below 0°F, the water temperature can actually drop below its freezing point without becoming a solid – a rare process known as supercooling.

If the water gets too cold, your fish have nowhere warm to go. Living without their warm hangout spot could compromise their oxygen supply and immune systems, making them vulnerable to parasites and diseases.

The best way to deliver oxygen to your fish is with a bottom diffused aerator, like an Airmax® Aeration System. You can keep it running without creating an inhospitable environment for your finned friends by simply moving your diffuser plates closer to the surface or turning half of them off.

If you relocate the diffuser plates to a spot that’s about half the depth of your pond or run only 50 percent of them, a pocket of warm water will remain for your fish at the bottom. You’ll continue pumping oxygen into the water and keeping a hole in the ice for gas exchange without having to worry about freezing your fish.

Pond Talk: What steps do you take to prevent over cooling or supercooling your pond?

Call (866) POND-HELP - Free Aerial Aeration Mapping Service