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Heaters

Aquarium Supplies

Aquarium Heaters

A quality heater is necessary if you intend to maintain a successful tropical freshwater, marine fish or reef system. Temperature fluctuations often go unnoticed by aquarists and can cause stress to fish and corals. Most heaters include a built-in thermostat to select the optimal temperature for your aquarium.

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  1. Cobalt Aquatics Accu-Therm 300 Watt Aquarium Heater

    Cobalt Aquatics Accu-Therm 300 Watt Aquarium Heater

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    Cobalt Aquatics Accu-Therm 300 Watt Aquarium Heater Features Fully submersible heater Easy temperature setting Computer tested, accurate ±2°F Triac equipped thermostat Borsilicate glass for superior heat and shock re...
    ONLY
    $35.77
  2. Cobalt Aquatics Accu-Therm 250 Watt Aquarium Heater

    Cobalt Aquatics Accu-Therm 250 Watt Aquarium Heater

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    Cobalt Aquatics Accu-Therm 250 Watt Aquarium Heater Features Fully submersible heater Easy temperature setting Computer tested, accurate ±2°F Triac equipped thermostat Borsilicate glass for superior heat and shock re...
    ON SALE
    $35.26
  3. Cobalt Aquatics Accu-Therm 200 Watt Aquarium Heater

    Cobalt Aquatics Accu-Therm 200 Watt Aquarium Heater

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    Cobalt Aquatics Accu-Therm 200 Watt Aquarium Heater Features Fully submersible heater Easy temperature setting Computer tested, accurate ±2°F Triac equipped thermostat Borsilicate glass for superior heat and shock re...
    ON SALE
    $31.49
  4. Cobalt Aquatics Accu-Therm 150 Watt Aquarium Heater

    Cobalt Aquatics Accu-Therm 150 Watt Aquarium Heater

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    Cobalt Aquatics Accu-Therm 150 Watt Aquarium Heater Features Fully submersible heater Easy temperature setting Computer tested, accurate ±2°F Triac equipped thermostat Borsilicate glass for superior heat and shock re...
    ON SALE
    $30.49
  5. Cobalt Aquatics Accu-Therm 100 Watt Aquarium Heater

    Cobalt Aquatics Accu-Therm 100 Watt Aquarium Heater

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    Cobalt Aquatics Accu-Therm 100 Watt Aquarium Heater Features Fully submersible heater Easy temperature setting Computer tested, accurate ±2°F Triac equipped thermostat Borsilicate glass for superior heat and shock re...
    ONLY
    $28.49
  6. Cobalt Aquatics Accu-Therm 50 Watt Aquarium Heater

    Cobalt Aquatics Accu-Therm 50 Watt Aquarium Heater

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    Cobalt Aquatics Accu-Therm 50 Watt Aquarium Heater Features Fully submersible heater Easy temperature setting Computer tested, accurate ±2°F Triac equipped thermostat Borsilicate glass for superior heat and shock res...
    ON SALE
    $26.99
  7. Cobalt Aquatics Accu-Therm 25 Watt Aquarium Heater

    Cobalt Aquatics Accu-Therm 25 Watt Aquarium Heater

    Cobalt Aquatics Accu-Therm 25 Watt Aquarium Heater Features Fully submersible heater Easy temperature setting Computer tested, accurate ±2°F Triac equipped thermostat Borsilicate glass for superior heat and shock res...
    ON SALE

    Was: $25.99

    $22.09

  8. Cobalt Aquatics Neo-Therm 100 Watt Aquarium Heater w/ LED Display

    Cobalt Aquatics Neo-Therm 100 Watt Aquarium Heater w/ LED Display

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    Cobalt Aquatics Neo-Therm 100 Watt Aquarium Heater The Cobalt Aquatics Neo-Therm electronic heaters have an impressive accuracy of ±0.5ºF. The electronic thermostat has an ultra-fast response time that helps to keep the tempe...
    ON SALE
    $65.79
  9. Cobalt Aquatics Neo-Therm 75 Watt Aquarium Heater w/ LED Display

    Cobalt Aquatics Neo-Therm 75 Watt Aquarium Heater w/ LED Display

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    Cobalt Aquatics Neo-Therm 75 Watt Aquarium Heater The Cobalt Aquatics Neo-Therm electronic heaters have an impressive accuracy of ±0.5ºF. The electronic thermostat has an ultra-fast response time that helps to keep the temper...
    ON SALE
    $60.49
  10. Cobalt Aquatics Neo-Therm 50 Watt Aquarium Heater w/ LED Display

    Cobalt Aquatics Neo-Therm 50 Watt Aquarium Heater w/ LED Display

    Be First to Review

    Cobalt Aquatics Neo-Therm 50 Watt Aquarium Heater The Cobalt Aquatics Neo-Therm electronic heaters have an impressive accuracy of ±0.5ºF. The electronic thermostat has an ultra-fast response time that helps to keep the temper...
    ON SALE
    $58.00

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