Visi Therm Submersible Aquarium Heaters

Product No. ML90438-00
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Visi-Therm® Submersible Heaters from Marineland feature direct-set control, guaranteed durability, and certified accuracy to within one degree. Setting the temperature has never been easier.  The easy “click”’ top dial now features calibrated marks to confirm your setting from the top, which compliment the traditional side viewing sliding scale. Visitherm Submersible Heaters are the perfect choice for beginners, and for longtime hobbyists alike, who appreciate the ability to easily see and change temperature settings.

The advanced mounting bracket provides three window positions to view the temperature display from multiple angles. No other aquarium heater is so easy to install, so easy to set, and so easy to use on a daily basis. cUL-approved for safe operation in both marine and freshwater aquariums.

  • High Visibility Temp Setting, with easy-to-view sliding scale, tells the exact temperature setting. Top view shows the setting at the dial.
  • Click-set temperature dial to accurately set temperature to +/- 1 degree Fahrenheit with every “click.”
  • Advanced mounting bracket, which securely attaches to glass, provides three window positions to view temperature display from multiple angles.
  • Triac Equipped Thermostat switches heater on and off with lower voltage for superior reliability and performance.
  • Mesh heating element with mica core, coupled with epoxy fill, ensures the most efficient heat transfer, and eliminates rattling coils.
  • LED on/off light to indicate clearly when the heater is operating.
  • Double-strength glass casing for extra durability.

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    Model Watts Aquarium Sizes
    Visi-Therm 25 25 Up to 6 gallons
    Visi-Therm 50 50 Up to 12 gallons
    Visi-Therm 75 75 Up to 20 gallons
    Visi-Therm 100 100 Up to 29 gallons
    Visi-Therm 150 150 Up to 40 gallons
    Visi-Therm 200 200 Up to 55 gallons
    Visi-Therm 250 250 Up to 70 gallons
    Visi-Therm 300 300 Up to 80 gallons
    Visi-Therm 400 400 UP to 125 gallons