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Drs. Foster and Smith Pet Supplies

Cobalt Aquatics Easy-Therm Submersible Aquarium Heater

Cobalt Aquatics Easy-Therm Submersible Aquarium Heater
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* Submersible aquarium heater computer tested within ±2°F accuracy
* Flat heater design reduces visual clutter for a clean aquarium display
* Durable heater with shatterproof casing great for fresh & saltwater aquariums

Durably constructed aquarium heater with super flat design available at a great hobby-friendly price. Cobalt Aquatics Easy-Therm Submersible Aquarium Heater features a shatterproof outer casing and a sleek, low-profile design to ensure reliable, long-lasting use while minimizing visual-clutter that detracts from aquarium aesthetics. Shatterproof, European-made heater features a Triac equipped thermostat for controlled ON/OFF cycles and is computer tested to maintain accurate aquarium temperatures within ±2°F.

Cobalt Aquatics Easy-Therm Submersible Aquarium Heater with manual click set temperature dial allows easy and precise control of temperature settings from 64°F to 97°F. LED Indicator lights allow simple visual confirmation of heater operation. Included double suction cup mounting bracket allows secure aquarium placement. Flat heater design provides sleek, subtle aquarium heating and measures only 2" x 1"! Great heater for freshwater or marine aquariums.


  • Easy to see indicator lights
  • Triac equipped thermostat turns heater ON and OFF at lower voltages to extend life
  • Clicking Temperature Dial for precise control of set temperature
  • Shatterproof outer casing
  • Modern super flat design
  • Double-sided mounting bracket with suction cups
  • Set temperature range from 64°F up to 97°F
  • Computer tested accuracy within ±2°F

Heater Wattage Length Ideal for Aquariums
Easy-Therm 25 25W 6-1/2" Up to 6 Gallons
Easy-Therm 50 50W 6-1/2" Up to 12 Gallons
Easy-Therm 75 75W 8-1/2" Up to 20 Gallons
Easy-Therm 100 100W 9-3/4" Up to 29 Gallons

Heater Selection Guide
Aquariums up to Model
6 Gallons 25W
12 Gallons 50W
20 Gallons 75W
29 Gallons 100W

*To raise temperature up to 11°F above ambient temperature.

Shop all Aquarium Heaters.

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Please note: Return of electrical equipment to Drs. Foster & Smith for exchange or refund is limited to 60 days from the date of purchase. Beyond 60 days, please contact the manufacturer for repair or replacement as covered by the manufacturer's warranty.

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