Marineland Stealth 100 Visi-Therm Submersible Aquarium Heater
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Marineland Stealth 100 Visi-therm Submersible Aquarium Heater


Rating: 4.3

Average rating from 9 reviews.

(4.3 out of 5, based on 9 reviews)

Completely submersible aquarium heater is calibrated for superior accuracy in your freshwater or marine aquarium. The UL-approved heater is so streamlined, you can't even tell it's there. Temp Select Dial Allows easy setting, just dial to the desired aquarium temperature. Reinforced Plastic Casing Protects components against UV s and thermal/mechanical shock. Overheat Protection Shuts down if heater is left out of water. Restarts automatically when in water. Aluminum Cylinder and Eight-Cavity Heating Element Distribute core heat evenly. Shock Absorber Safely secures heating element.
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Reader's Reviews (9)
Rating: 1

Killed all my fish!

posted 5 years ago

Had the stealth heater for 8 months and 6 hours after a feeding I found all my fish dead and the water temp was 100 degrees. The thermostat feature probably stuck on and cooked em'. I hadn't adjusted it since I first set it up. Watch out!

Pros: Durable

Cons: Kills Fish

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Rating: 5

Great accurate heater

posted 6 years ago

I purchased this heater after my aquatic turtles shattered my glass submersible heater. I love it. It is easy to keep clean. It keeps the tank at a consistent temperature even though I turn my home's heat down to 60 degrees during the days of winter. My turtles like to use it to get a boost closer to their warming light but the suction cups can't hold their weight so it is usually just floating around the bottom of the tank banging up against the glass and I don't even worry about it.

Pros: tough shatterproof case, accurate temperature

Cons: suction cups not strong enough to hold turtles

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