Aquarium Co-Op Heater

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  • 1-year Aquarium Co-Op warranty
  • Built-in heater guard 
  • Extra-long, 11.8-foot cord

The Aquarium Co-Op heater comes in two sizes — 50 watt and 100 watt. It is reliable, accurate, and thoughtfully designed to avoid some of the problems we encounter with many other heater brands on the market. If you do run into a problem, Aquarium Co-Op provides a 1-year, hassle-free warranty on this heater.

This compact heater is easy to position within the aquarium and has a built-in heater guard to protect the unit from damage. You can quickly adjust the temperature without getting your hands wet, since the adjustable temperature controller is located in the middle of the power cord and sits outside the aquarium. Plus, the cord itself is extra long and extends 11.8 feet, so reaching the outlet is much easier compared to many other heaters. (The cord length between the heater and controller is 4 feet.)

The heater is intended for indoor use only, so please make sure the tank water is around room temperature before plugging it in.

Note: When you first plug in the heater, a yellow indicator light will briefly turn on and then turn off again. The yellow light will turn on again once the unit has run for 17,520 hours, which is 2 years of being plugged in full time. At this point, the heater will still continue to work, but the yellow light reminds you that it has reached the end of its expected life and it may be time to start thinking about replacing the unit to ensure the highest performance. The red indicator light turns on whenever the heater is actively heating the water, and the temperature display is always on to show the current water temperature.

Download the Manual

Customer Reviews

Based on 493 reviews
GTscapes (Landisville, PA, US)
Great heater! :D

Very reliable heater, accurate and happy with purchase. I highly recommend to anyone in need of a easy to use and great buy.

Steven W. (Sherrills Ford, NC, US)
First try

Always use aquaeon pros and never had a problem but watched the podcast and saw how cool they were with the features. . Got one and and it’s pretty cool. Will get more

Andrew P. (Burlington, WA, US)
Co-op heater

Been working great so far, wish they had bigger wattage sizes.

Zachary P. (Saltillo, MS, US)

Plenty powerful enough to hit temps easily. External temperature selector with the extra long power chord is definitely a pro move.

Ari A. (Columbia, SC, US)
Love it ! So much

This is an excellent heater, I have it in my 10 gallon and it gets the job done! Definitely my favorite one by far.