Tetra Pond De-Icer, 300-watt

By Tetra
Rated 4.0571 out of 5 stars
$41.99 (-35%)Chewy Price
$64.59Chewy Price
In Stock
FREE 1-3 day delivery

About This Item


  • Heats up to melt a pocket of ice around it up to - 20°F in outdoor ponds and tanks.
  • Makes an opening in the ice to allow trapped toxic gases to escape safely and keep your fish healthy.
  • Thermostatically controlled winter survival solution shuts off after melting the ice.
  • Comes with a natural stone finish so it looks great in any naturalistic pond environment.
  • Works on an energy efficient 300 watts and is UL listed for safety; includes 15 foot power cord.

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Play Video: Learn More About Tetra From Our Team of Experts
Learn More About Tetra From Our Team of Experts

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Questions & Answers

10 Customer Questions

I have a 2000 gallon koi pond pond. I understand that I can purchase more de-icers, but will one do the trick?
Answer by ChewyOct 27, 2018
The surface area of your pond will determine the amount of de-icers you may need. It's recommended to use 1 de-icer per every 150 square feet of surface area.

Will this keep my fish warm?
Answer by ChewyAug 24, 2019
This de-icer is not meant to keep your fish warm and are not pond heaters. There is no need to raise the water temperature of the pond during the winter. It is only important to keep a small area of the surface ice-free.

Can this be used in a baby pool? Is it safe to sit against the plastic? Looking to buy this for my ducks for the winter so they can still access the pool if wanting to
Answer by ChewySep 22, 2018
It's not recommended to use this de-icer in a baby pool because it needs to be grounded. Grounding is the act of connecting a conductor, or exposed conductive parts of an installation, to the earth.

I bought this for a small 150 gallon yard pond . It seems to be warming up the pond not just de icing . I thought it was supposed to have a thermostat to turn off before it made the water warm. Could it be that it’s too large for the size of our pond?
Answer by ChewyJan 12, 2021
The manufacturer recommends this de-icer for a pond measuring a minimum of 150 square feet of surface area. The internal thermostat will turn on when the internal temperature of the unit drops to a certain temperature, and then turn off when it reaches the max internal temperature of 89.6. It does not read the water temperature, and so it may operate even during warm times. It is best to only plug it in when the temps are going to be freezing or colder. It should not be plugged in unless the air temperatures will be below 32 degrees.

ReviewsWrite a Review

Rated 4.0571 out of 5 stars
35 Ratings
Would recommend to a friend

33 Customer Reviews

Rated 1 out of 5 stars
By heidi on Oct 12, 2023

this quiet in my pond

this died in my pond and i lost my goldfish and my turtles

Rated 3 out of 5 stars
By Scott on Mar 9, 2023

Doesn’t last

I am on my 3rd unit in 5 years. The most recent one just stopped working after 3 months of winter.

Rated 5 out of 5 stars
By Maso on Jul 4, 2022

Tetra Pond Heater

The Tetra pond heater operating at 300 watts has just enough power to provide a hole in the frozen crust above your pond to let oxygen into the pond. The 300 watts is very economical than other high wattage heaters and will operate at a savings 4X less than common 1200 watt heaters during the winter months.

Rated 5 out of 5 stars
By Debbie on Nov 4, 2022

Tetra Pond De-icer

Not been cold Enough to see it working in our fish pond.

Rated 5 out of 5 stars
By Denise on Mar 4, 2022

Looks good

Works well. Looks good and fish seem to like it. Very simple to use and the cord is a nice length that worked well with my pond setup.

Rated 1 out of 5 stars