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Q&A: Are there any tips to making sure the ice on my pond is safe to stand on?

Winter brings not only cold weather and snow to your pond or lake but a perfect layer of ice for skating, ice fishing, snowmobiling and other fun as well. While you may be eager to get out on the ice this season, it is important that you know…

My pond isn’t frozen yet, but I can’t see my fish. Are they okay? | Ponds & Lakes Q&A

Fish are survivors. And when the water starts getting cold, they head for deeper waters, where the chilling effects of winter air are less pronounced. Provided there’s adequate aeration, your fish will likely linger at the bottom throughout the colder months. As a result, they’ll be much less visible – but the odds are extremely good they’re doing just fine.

During the summer, I run my aeration system all the time. Can I just run it part-time during the winter so the pond will freeze for skating? | Ponds & Lakes Q&A

If you’re the least inclined to use your pond for ice skating during the winter months, there’s only one way to go – and it doesn’t involve aeration.
Lots of pond owners choose to keep their aerators up and running during the winter months. It’s a logical choice – particularly when the pond is inhabited year ‘round by fish – because the aerator prevents the pond from freezing fully, allowing potentially gases produced by organic matter

When should I remove the fountain from my pond? | Ponds & Lakes Q&A

While we’re not particularly anxious for winter to arrive it is in our best interest to start preparing for the cold that will inevitably come. Since you are working not only outdoors but in the water as well you may want to get a jump start on removing your fountain from your pond before you start feeling the full effects of winter.

Is it too cold to use bacteria? If so, is there anything else I should continue to use now? | Ponds & Lakes Q&A

Like lots of living creatures, beneficial bacteria appreciate a cozy, comfortable environment. And from their bacterial perspectives, water temperatures below 50 degrees Fahrenheit are no longer cozy at all. That’s why we recommend against the use of bacteria when the water falls below that threshold.

Do herons fly south for the winter? | Ponds & Lakes Q&A

Herons are migratory birds, and they have no appreciation for cold weather. So if you’re located in the cooler northern climes – particularly where ponds tend to freeze during the winter months – you’ll usually notice their absence when temperatures start to drop.

What happens to the frogs and toads during the winter? | Pond & Lake Q&A

As the temperatures continue to drop you will begin to notice that your pond, once full of life, is now starting to look like abandoned arctic tundra. Gone are the cool summer nights spent on your patio and deck watching fireflies tastefully illuminate your lawn while being serenaded by a choir of frogs and crickets.

Do Cattails actually die in the winter or can I do something to prevent them from coming back? | Pond & Lake Q&A

During the winter months, cattail foliage dies off. Leaves and stems turn brown and dry up when the weather gets cold, and optimistic pond keepers dare to imagine their backyard water features without the scourge of unwanted cattails. But deep beneath the pond, cattail roots are alive and well in their dormant state, saving up their energy to come back strong in the spring.

Do I need to stop feeding my game fish for the winter? If so, when and what will they eat when I stop? | Pond & Lake Q&A

When water temperatures drop below 40 degrees Fahrenheit, game fish activity slows down significantly – and their appetites slow down too. At that point, they’re capable of finding plenty of food in their habitat, making it unnecessary to continue feeding.

Is there an ideal temperature to treat algae? | Pond & Lake Q&A

It depends what you mean by the word “treat.” If you’re looking to throw a party in its honor, pretty much any temperature will do – because algae grows all year ‘round, even during the winter months. But if you’re hoping to give it the kind of treatment that makes it feel extremely unwelcome, you’ll see the best results when water temperatures are at 50 degrees Fahrenheit or higher.

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