TetraPond Thermostatically Controlled Fish Pond Heater & De-Icer

Last updated date: December 3, 2020

DWYM Score

8.8

TetraPond Thermostatically Controlled Fish Pond Heater & De-Icer

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We looked at the top Pond Heaters and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Pond Heater you should buy.

Editor's Note December 3, 2020:
Checkout The Best Pond Heater for a detailed review of all the top pond heaters.

Overall Take

With 300 watts of power, this de-icer can keep your pond heated up to outdoor temperatures of -20 degrees Fahrenheit. a 15-foot cord gives you plenty of reach, and the built-in thermostat ensures energy efficiency. It creates a hole in the ice that's approximately 12 to 15 feet


In our analysis of 27 expert reviews, the TetraPond TetraPond Fish Pond Heater & De-Icer placed 2nd when we looked at the top 5 products in the category. For the full ranking, see below.

From The Manufacturer

For 50 years, fishkeeping enthusiasts have looked to the Tetra name for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need–-from a large variety of quality fish food and innovative equipment to test kits and decor. In cold weather, toxic gases caused by decaying matter and fish waste can become trapped under the ice by releasing harmful pond gases. The TetraPond De-Icer helps release harmful pond gases by keeping an area of the pond ice-free. It features include a natural stone finish that blends in with your ponds surroundings. This product is 300 watts. Energy-efficient thermostat control shuts off power when not needed. UL listed. Effective to - 20°F (-28.8°C). 15 foot cord. 3-year limited warranty. The TetraPond De-Icer helps fish stay healthy all winter long making it your winter survival solution for fish!

Expert Reviews

Expert Summarized Score

9.0
6 expert reviews

User Summarized Score

8.4
599 user reviews

What experts liked

Natural stone finish that blends in well. 300 watts. Works to -20F. Comes with an energy-efficient thermostat and a 15-foot cord. Affordable.
- BestReviews
Natural-looking faux stone finish. 15-foot cord. Energy-efficient and keeps pond de-iced down to -20°F.
- Chicago Tribune
Thermostatically controlled. Effective to -20 degrees Fahrenheit. Has a natural finish stone. UL listed. 15-foot power cord included.
- Paint A Fish
Created a hole 12-15 inches wide. Long power cord 15 foot. 300 watt heater. Inexpensive. Effective to – 20°F.
- Fish Keeping Forever
It works well even with thick layers of ice (about 3″) over the surface of the pond. Not very bulky or unsightly. Powerful heating element and works well in freezing temperatures.
- BackYard Alpha
UL-listed. 3-year warranty. 15-foot power cord.
- Fish Tank Advisor

What experts didn't like

Some buyers note that many of these don't last beyond a seasone or two.
- BestReviews
May only last one or two seasons.
- Chicago Tribune
Lasts for 2 to 3 years.
- Paint A Fish
Reports of rusting after 12 months..
- Fish Keeping Forever
Large ponds can diffuse the heat its element produces, but for small ponds, it has to be removed or shut off when the pond isn’t frozen. Known to cause ground fault circuit breakers to trip.
- BackYard Alpha
Unattractive fake rock shape. Has some reliability issues.
- Fish Tank Advisor

An Overview On Pond Heaters

A pond can enhance your outdoor spaces, creating a peaceful retreat in your own backyard. You can even add some small fish and plants to keep it healthy. But unless you live in an area where the temperature is warm year-round, chances are you’ll need to do a few things to protect your pond from cold temperatures.

You have two choices for winterizing your pond: shut it down for the winter or keep it running year-round. The latter requires routinely topping off your pond and monitoring ice buildup. The former means you’ll need to drain the water from the plumbing, remove the pump and oxygenating the water using a recirculating pump.

If you have fish and plant life, though, you’ll need to do what it takes to keep that life healthy even in the coldest temperatures. In colder weather, a sheet of ice will likely form on your pond. The problem with that is that it traps gases in the water, potentially harming the plant and fish life beneath that ice.

A pond heater is the easiest solution. Your pond heater will create a small hole in the ice that allows dangerous gases to escape. Pond heaters typically run on a small electrical current, so you won’t have to worry about excessive electricity usage, even with a larger pond.

The Pond Heater Buying Guide

  • Fish go into hibernation when the water temperature dips below 50 degrees, so make sure you stop feeding them at that point.
  • A de-icer will create a hole in a small section of the pond, which means it will have a maximum capacity. Make sure the pond de-icer you choose can handle your pond size. There’s also the option of using multiple de-icers, spacing them apart to cover the full length of your pond.
  • Since a de-icer floats on top of the water, it could disrupt your outdoor aesthetics. You can buy de-icers that are made to look like a stone, as well as others that have a low profile to keep things looking good.
  • If you have trees near your pond, the autumn months can be rough on it. A net can help keep leaves from getting in the pond, where they’ll fall to the bottom, decay and release gases. When combined with your de-icer, this can help keep your fish and plant life healthy.
  • Safety is important with any electrical appliance. Some de-icers have a built-in thermostat to keep them from overheating.
  • It can be tempting to set your de-icer up and forget about it until spring. But it’s important to check on it when temperatures drop and make sure it’s still doing its job.