I have an aeration system but the pond is frozen over, am I still getting aeration? | Ponds & Lakes Q&A

6 Jan

Q: I have an aeration system but the pond is frozen over, am I still getting aeration?

Q: I have an aeration system but the pond is frozen over, am I still getting aeration?

Jenni – Monticello, NY

A: Even if you’ve been running your aeration system diligently throughout the winter to protect your fish, it is still possible for your pond freeze over. It is not uncommon for the cold weather to close up the holes created by your aeration system during a streak of particularly frigid winter days. Your pond is able to hold a substantial amount of oxygen which acts as a buffer for days where your pond is getting less than ideal air exchange. Even when frozen, your aeration system will continue to circulate and add oxygen to the water column. Typically a sunny or warmer day will provide the assistance your aeration system needs to re-establish ventilation holes in the ice and release any harmful gas that accumulated while the pond was frozen over.

If your pond stays frozen over for more than a week or two at a time you may want to consider using an ice auger to drill a couple holes in the ice around the perimeter of your pond. Do not venture out towards the center as your aeration system is constantly bubbling and weakening the ice. Never try to pound, crack or break through the ice to open a hole for air exchange as it will send pressure waves throughout the pond disrupting and possibly killing your fish. Positioning your aeration plates in shallower areas of your pond will make it easier for the surface water above the plate to remain open due to increased water movement reaching the pond’s surface.

If your pond still hasn’t thawed out with the help of warm weather, sunshine and shallow plate placement, inspect your aeration system to make it is properly functioning. If you are using an Airmax® Aeration System, make sure the air filter is clean and is being changed every 3 to 6 months. Check your pressure gauges and airlines for indications that the compressor is still producing adequate air flow. If your system is between 3 to 5 years old consider installing a maintenance kit which replaces all of the seals and wear and tear parts that lead to decreased system performance. If the pressure reads abnormally high it may indicate that your airlines are obstructed by ice or possibly pinched or crushed.

If your pond only stays frozen over for short periods of time there is no need to worry. The holes will open back up on their own and your pond will take care of the rest naturally. Continue to regularly inspect your aeration system for signs of trouble and ALWAYS exercise caution when venturing near the ice. Make sure there is a flotation device present at your pond both in the summer and winter.

Pond Talk: Does your pond freeze over during the winter, even with aeration?

Keep Your Pond Healthy All Winter - Airmax® Aeration System

 

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How large of a hole will an aeration system keep open in the ice? I like to keep open water for ducks. | Ponds & Lakes Q&A

16 Dec

Q: How large of a hole will an aeration system keep open in the ice? I like to keep open water for ducks.

Q: How large of a hole will an aeration system keep open in the ice? I like to keep open water for ducks.

Mark – Concord, VT

A: No doubt those ducks will appreciate some open water in the winter, and an aerator is the best way to keep that hole open for them. Many factors will affect the hole’s size and how long it will remain open, but here are three important points to consider:

  1. Size of the System: Larger aeration systems will move more water, and all that water movement will create a larger hole that will stay open longer. If you want a bigger open area, consider a beefier aeration system.
  2. Depth of Water: Water depth matters, too. An ice-free open area in deep water is more difficult to maintain than one in shallow water, where there will be more water movement at the surface. If possible, plan your open water in the shallow areas of your pond.
  3. Weather: Mother Nature has her say, too. When it’s cold and windy, it’ll be more difficult to keep that opening ice-free. In fact, frigid temperatures can restrict the hole down to a couple of feet or less! But when the weather warms up, the hole can open to areas of 10 feet or more.

Ideally an aeration system should be matched to your pond’s size and shape, and run all season. Diffusers can then be moved to shallow water for the ducks during winter. Simply place the diffusers evenly across a small area in the shallow part of your pond so they can work together to keep a larger area open. Watch the video below for tips on installing Airmax® Aeration Systems:

This winter, those lucky ducks will have a place to float!

Pond Talk: What kinds of birds visit your pond in the winter?

Maximum Shallow Water Circulation - Airmax® Shallow Water Series™ Aeration Systems

 

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I heard you can lose fish during the winter. How do I prevent a winter fish kill? | Ponds & Lakes Q&A

28 Oct

Q: I heard you can lose fish during the winter. How do I prevent a winter fish kill?

Q: I heard you can lose fish during the winter. How do I prevent a winter fish kill?

Jon – Little Suamico, WI

A: Imagine being cooped up all winter long in a room with no ventilation and no fresh air. Pretty claustrophobic, right? Now add the stench of decaying garbage and other waste buildup … it’s likely you wouldn’t last until spring.

It’s a similar situation with your fish.

In colder climates that freeze over the winter, decomposing vegetation and waste beneath the ice layer releases toxic gases that build up, displacing the oxygen that the fish need to survive. When that O2 is replaced with ammonia and other harmful gases, the result can be a winter fish kill.

So how to do you prevent this from happening? Aeration with an Airmax® Aeration System.

Open a Window!

An Airmax® Aeration System sized for your lake or pond moves the water below the frozen surface, which keeps an air hole open in the ice. This ventilation allows the harmful gases to escape while bringing in fresh oxygen for your fish. The aeration also injects oxygen into the water via the bubbles that come out of the diffuser or air stones.

Provide Year-Round Oxygen

For the health of your fish, we recommend you run an aeration system year-round—unless you plan to use the pond for winter activities, like ice skating or hockey, that require a solid and safe sheet of ice. In that case, follow the instructions in your product manual to safely turn off your system.

Create a Warm Zone

If you plan to run your system year-round, move the diffuser plates into shallower water during the winter months. This will allow your fish to hunker down in your pond’s warmer depth for the winter. It will also prevent the rare “super cooling” effect, in which the water temperature dips below freezing and over chills your fish.

Pond Talk: Have you ever experienced a winter fish kill? What changes did you make to prevent it from happening again?

Aerate Your Pond in All Seasons - Airmax® Aeration Systems

 

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