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For winter, do I need to move my diffusers, or can I just close the valves?| Ponds & Lakes Q&A


Q: For winter, do I need to move my diffusers, or can I just close the valves?

Q: For winter, do I need to move my diffusers, or can I just close the valves?

Chuck- Tipton, IN

A: Diffusers – and the oxygen they pump into your pond or lake – ensure the health and well being of your fish. Year-round aeration circulates the water column and fills the pond with oxygen. If your pond freezes over during the cold months of the year, an aeration system will can also help maintain a hole in the ice to allow harmful gases to escape.

Move Your Diffusers:

As part of your winter-prep chores, you will need to move the diffuser plates to a shallower spot in your pond or lake. Why? Give your fish a place to safely overwinter in deeper, warmer water. When the plates are closer to the surface, they will also help to keep a hole open in the ice.

Close the Valves:

In addition to relocating your diffuser plates, you can also close about 50 percent of the valves (unless you have the PS10 or LS10 models of Airmax® Aeration Systems, in which case you leave the valve open). You won’t be mixing as much water, but you will be adding enough oxygen to the pond and allowing for gas exchange at the surface.

Stay Safe:

Because you’re aerating your pond over the winter, consider putting up a “Thin Ice” sign near the shoreline. Air pockets form in ice sheets created on aerated ponds, and they make the surface unsound and not safe to walk or skate on. Warn would-be hockey players and figure skaters of the danger before they get into trouble.

While you’re thinking about safety, make sure you have a Life Ring, first aid kit and blanket stowed lakeside in a weatherproof bin just in case someone does fall through the ice.

Pond Talk: How spectacular are the fall colors around your pond or lake right now?

Aerate Your Pond in All Seasons - Airmax (r) Pond Series (t) Aeration Systems

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