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Aquarium Co-Op Heater (50 Watts)

Aquarium Co-op (In Store Only)

Regular price $26.99

No Shipping Store Pickup Only.
  • 1 Year Hassle Free 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 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.

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.


– Digital display
– 1-year, hassle-free Aquarium Co-Op warranty
– Explosion-proof quartz glass tube
– Automatic over-temperature protection
– Built-in heater guard
– Temperature accuracy +/-2 degrees F
– Temperature range of 64–91 degrees F
– 4 replacement suction cups included

Recommending a size for a heater is difficult because there are so many factors that go into correct sizing. These include room temperature, material the aquarium is made out of, how high the temperature is set, if other equipment like filters are running (which add heat), and finally if the aquarium has a tight fitting lid. In our experience, our 100 watt heater can heat up to a 75-gallon tank in a home with a proper fitting lid at 78°F. However, add a second heater or reduce tank size for non optimal conditions.

The heating unit itself is fully submersible. Do not submerge the temperature control mechanism.

If the suction cups do not stay attached, please make sure to clean the aquarium wall before attaching the heater. We recommend using an algae scrubber or other appropriate tool for wiping off any algae or debris to ensure that the surface is completely clear and flat.

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