Customer Reviews

Rating: 4.2 of 5 stars 44 Reviews 44 Reviews 4.2 out of 5 Stars

84% Recommend

84% of reviewersrecommend this product

Rating: 4.2 of 5 stars 4.2 / 5

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Marina Betta Submersible Aquarium Heater

Marina Betta Submersible Aquarium Heater

  • Most Helpful Positive Review

    Read All 34 Positive Reviews

    Betta Heaters

    By BriM on Feb 2, 2020

    Bought these on a whim and very pleased with them. I have temporary small tanks set up for quarantine of a few new betta and they maintain the temperature during the winter very well. Both tanks have thermometers to keep a check on temp. The only negative thing about these is that there is no set temp Bought these on a whim and very pleased with them. I have temporary small tanks set up for quarantine of a few new betta and they maintain the temperature during the winter very well. Both tanks have thermometers to keep a check on temp. The only negative thing about these is that there is no set temp on them. Thou there is a red light to know that it is on. … more

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  • Most Helpful Critical Review

    Read All 10 Critical Reviews

    doesn’t work

    By mjww on Mar 17, 2020

    I put this heater in my betta’s .5 gallon tank (it was at 78°). I woke up the next morning and the temperature was at 60°.

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4 Reviews

Showing 4 Reviews

  • 4 out of 5 stars

    Betta Heaters

    By on

    Bought these on a whim and very pleased with them. I have temporary small tanks set up for quarantine of a few new betta and they maintain the temperature during the winter very well. Both tanks have thermometers to keep a check on temp. The only negative thing about these is that there is no set temp on them. Thou there is a red light to know that it is on.

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  • 4 out of 5 stars

    Works well now

    By on

    For the first week, this seemed to be inconsistent, but now I have been using it for over a month and haven’t had more problems with it. Works well for my small tank.

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  • 4 out of 5 stars

    Good heater but lacks thermostat control

    By on

    Heater works well but because it sometimes gets too hot for a small aquarium, it needs a timer to control the temperature. I set the timer so that heater is on for a few hours and then off for an hour so I can keep water between 76 and 78 degrees.

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  • 4 out of 5 stars

    Good for intended purposes

    By on

    This heater will work and work well in a smaller tank. Be sure you are using it in a tank 1.5 gal or less. It's simply not enough for a larger tank. The thermostat feature does work. It also has a nice indicator light to let you know it is on. Only negative is the heater has a tendency to lift up a little and twist. 2 suction cups on this model would have been better than one.

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