• Archives

  • Categories

  • Pages

Do I need to heat the water in my pond in order for my fish to survive the winter? | Decorative Ponds & Water Gardens Q & A

Do I need to heat the water in my pond in order for my fish to survive the winter?

Q: Do I need to heat the water in my pond in order for my fish to survive the winter?

Kimberly – Bradford, PA

A: We all love central heating or a roaring fireplace in our homes when winter’s chilly temperatures roll in, but your pond fish—specifically your koi and common goldfish—don’t need those creature comforts to stay happy and content.

Cold Temps and Torpor

During the winter months when the water temperature is 45 to 50 degrees Fahrenheit and below, koi and goldfish enter into a dormant state. The technical term for this is torpor, and it means that the fishes’ metabolism and activity slows, they become very lethargic, and they require little nourishment. In this state, the koi and goldfish will, in fact, be quite comfortable in temperatures as low as 35 degrees.

Demystifying De-icers

If koi and goldfish don’t need the water warmed, what’s the deal with pond heaters and de-icers, like the Thermo-Pond, Farm Innovators, TetraPond® or Perfect Climate™ de-icers?

These tools of the trade aren’t intended to turn up the heat in your pond’s water. They’re designed to simply melt a hole in the ice, which allows dangerous gases to escape while letting fresh and life-sustaining oxygen. When plugged into the Thermo Cube® Thermostatically Controlled Outlet, the de-icers will turn on when temps dip to 35 degrees and off when temps rise to 45 degrees on their own. To save even more on energy costs this winter, consider installing a PondAir™ & Thermo-Pond 3.0 aeration and pond de-icer combo. When used with an aeration system, you can use a lower wattage de-icer which will not need to be ran as often to maintain an open ventilation hole.

De-icer’s Limitations

But the one thing de-icers don’t do: actively circulate or move the water like an aeration system does. That agitating action is necessary to trap and bring oxygen into the pond’s entire water column—including the bottom, where the fishes are snoozing. It also helps to prevent ice from forming a complete sheet on the pond surface.

Though running a pump will help move the water, it doesn’t agitate it enough to get those O2 levels up. A pump also costs more to operate than an aeration system, and, if ice does form, you could do some major damage to the unit from poor water flow. If you do not yet own an aeration system for your water garden, the PondAir™ & Thermo-Pond 3.0 Combo is a surefire way to protect your fish this winter.

Pond Talk: How do you keep a hole in the ice on your pond or water garden during the winter?

PondAir™ & Thermo-Pond 3.0 Combo - Protect Your Fish This Winter

Can I Break A Hole Open In The Ice Over My Pond? | Decorative Ponds & Water Gardens Q & A

Can sidewalk salt be used to melt the ice off my pond?

Can I Break A Hole Open In The Ice Over My Pond?

Liz – Carterville, IL

When maintaining a pond during the winter, it is important that the surface of your pond does not freeze over with ice. If you have an aeration kit running in your pond but the resulting hole in the ice is getting smaller, or has closed up altogether, don’t panic. Sporadic short-term ice coverage is not an issue if you’ve done regular maintenance to reduce organic debris throughout the season. If the pond remains iced-over for weeks at a time, consider giving your aeration system a boost.

If your pond has frozen over and you want to reopen the hole, simply rest a pan of hot water on the surface of your pond to melt the ice away. Do not use a blunt object to break the ice open as the shock-waves will stress your fish. Also, refrain from poking holes in the ice as you may accidentally puncture your liner or poke one of your fish.

Another way to maintain an open ventilation hole is by adding a pond heater/de-icer above your aeration diffuser stone. If you have multiple air stones, gather them into one area to make it more difficult for ice to form.

Pond Talk: Do you notice the ventilation hole getting smaller or freezing over for short period of time in the winter?

Pond Heaters

Follow

Get every new post delivered to your Inbox.

Join 137 other followers