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Running a pond heater is expensive. Do I have any other options? | Decorative Ponds & Water Gardens Q & A

Q: Running a pond heater is expensive. Do I have any other options?

Q: Running a pond heater is expensive. Do I have any other options?

Vicki – Pawtucket, RI

A:  Yes, those pond heaters are expensive to run! But guess what? You don’t need one in the first place!

Heaters are more frequently used in aquariums, particularly those that house warm-water fish like tetras, danios or angelfish.

In your pond, the fish will overwinter just fine without a heater—even if temperatures drop below freezing. Pond fishes like koi and goldfish naturally go into wintertime hibernation when temperatures fall. They’ll stop eating, their metabolisms will slow way down and they’ll snooze through the winter without worrying about how warm their water is.

However, if you live in areas that experience freezing temperatures that cause your pond to ice over, you do need to worry about keeping a hole in the ice. The hole allows toxic gases like ammonia to escape while allowing oxygen in, and your fish will need that fresh O2.

So how do you create that hole? Not with a pond heater! Check out these much cheaper alternatives:

  • De-Icer: A de-icer floats on the water surface and melts a hole in the ice. Unlike a heater that actually warms the entire pond, a de-icer simply melts an opening in the ice sheet, thereby allowing for gas exchange.
  • Aerator: Rather than create a hole in the ice from above, an aerator like the PondAir™ (for smaller ponds) or KoiAir™ (for larger ponds) circulates the water below the ice sheet. In areas with mild winters, that subsurface water movement will keep a hole in the ice—but when temps really dip, an aerator may not be enough to maintain a vent hole.
  • De-Icer, Aerator Combo: An excellent and convenient option to consider is the PondAir™ & Thermo-Pond Combo. It combines both the Thermo-Pond de-icer and PondAir™ Aeration Kit, providing your water feature the one-two punch it needs to stay well-vented throughout the winter. Watch the video below for benefits and installation.

If you live in an area with temperatures that hover around the freezing mark, consider picking up a Thermo Cube®. It’s a thermostatically controlled outlet that turns on when air temperatures drop below 35°F and turns off when air temps rise above 45°F.

So put that pond heater on Craigslist and invest in a de-icer, aerator and thermostatically controlled outlet. It’ll save you money in the long run!

Pond Talk: What method do you use to keep a hole in the ice in your pond?

The Ultimate in Winter Protection - PondAir™ & Thermo-Pond Combo

There are so many de-icers to choose from. What size do I need? | Decorative Ponds & Water Gardens Q & A

Q: There are so many de-icers to choose from. What size do I need?

Q: There are so many de-icers to choose from. What size do I need?

Pia – Spokane, WA

A: A de-icer is an important piece of equipment in areas where water features freeze over during the winter. This little device maintains a small opening in the ice, which allows harmful gas to escape into the air allowing for efficient air exchange. It can be the difference between life and death for the fish and other inhabitants in your pond.

Which de-icer is best for your situation? It will depend on how many gallons your pond holds, and if you’re using it alone or with an aeration system.

First, here’s what we recommend for de-icers based on the size of your pond:

  • Up to 250 gallons: 100 to 250 watt de-icer
  • 250 to 500 gallons: 300 watt de-icer
  • 500 to 1,000 gallons: 750 watt de-icer
  • 1,000 to 1,500 gallons: 1,250 watt de-icer
  • 1,500 to 2,000 gallons: 1,500 watt de-icer

K&H™ Perfect Climate™ Pond De-Icer comes in 250-, 750- and 1,500 watt options. The thermostatically controlled de-icer is designed for floating or submersible use. Farm Innovator’s Floating Pond De-Icer, pumps out 1,250 watts of ice-melting power. It’s also thermostatically controlled and turns on when water temperature drops below 35°F.

These de-icers do a great job, but keep in mind that they can be expensive to run non-stop during the cold months. A 1,500 watt de-icer can cost up to $75.00 to operate. That’s a big bill for a small hole!

That’s where an aeration system comes into play.

Aeration systems – can help maintain a hole in the ice while adding oxygen and are infinitely more energy-efficient than pond de-icers. When used in tandem, aeration can significantly reduce the wattage requirements of your pond de-icer, allowing the use of a smaller 100 watt de-icer. It’ll cut energy costs and save you money all season long. For example a 2,000 gallon pond using the PondAir™ 4 and 100 Watt Thermo-Pond De-Icer will cost $5.40 per month instead of $75.00 using a de-icer alone. Not a bad deal!

If you decide to go this route – and why wouldn’t you? – Select the Airmax® PondAir™ and Thermo-Pond 3.0 De-Icer Combo. The combo comes with either the Airmax® PondAir™ 2 (for ponds 1,000 gallons or less) or the Airmax® PondAir™ 4 (for ponds 2,000 gallons or less). Both the PondAir™ 2 and PondAir™ 4 includes: air stones, check valves, black vinyl air tubing and the 100 Watt Thermo-Pond De-Icer. For an additional charge, you can also throw in a Mini Boulder TrueRock™ Cover to protect the air compressor.

De-icers are important, but they don’t have to break the bank. Invest in an aerator-de-icer combo and save your money for something you really want – like some new koi!

Pond Talk:What parts of your winter landscape do you most look forward to?

Safeguard Your Fish This Winter - PondAir (t) 2 & Thermo-Pond De-Icer Combo

The de-icer I purchased says it’s thermostatically-controlled. Why is it always running? | Decorative Ponds & Water Gardens Q & A

The de-icer I purchased says it’s thermostatically-controlled. Why is it always running?

The de-icer I purchased says it’s thermostatically-controlled. Why is it always running?
Bill – White Lake, MI

When backyard water features are home to year-round populations of fish, it’s vitally important to prevent long-term ice cover. Without a break in the ice, harmful gases produced by decaying leaves and other organic matter build up, threatening the well-being of wintering fish. To prevent that threat, many pond owners install thermostatically-controlled de-icers, which produce enough concentrated heat to keep a vent hole open during winter’s coldest months.

When a de-icer is thermostatically controlled, it is set to turn both on and off at certain temperatures. In theory, that makes good sense: if the water is cold, the de-icer goes to work, and when the water warms, it switches off – saving on unnecessary electricity costs. The problem, however, is that the water temperature in a frozen pond may not rise above the thermostat’s high-temperature shutoff threshold, leaving the de-icer in full heating mode all the time.

Naturally, we’ve given this issue some thought. And that’s why we strongly recommend the use of our Thermo Cube® Thermostatically Activated Plug. Unlike a thermostatically-controlled de-icer, the Thermo Cube® measures air – not water temperature. Thus, when the sun is shining, and air temperatures warm up, the Thermo Cube® automatically cuts power to the de-icer, and turns it back on when the air temperature drops. The combination works flawlessly – applying heat when it’s required to keep the ice open, and shutting it off when it’s not.

Pond Talk: Do you use a thermocube along with your de-icer?

Thermo Cube® Thermostatically Activated Plug


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