Customer Reviews

Rating: 3.7 of 5 stars 28 Reviews 28 Reviews 3.7 out of 5 Stars

79% Recommend

79% of reviewersrecommend this product

Rating: 3.7 of 5 stars 3.7 / 5

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Fluval Submersible Glass Aquarium Heater

Fluval Submersible Glass Aquarium Heater

  • Most Helpful Positive Review

    Read All 18 Positive Reviews

    Excellent purchase

    By MerleTheGirl on Apr 5, 2022

    The best aquarium heater I have purchased. Extremely accurate and the appearance in the aquarium is elegant. In fact, I am purchasing another one to replace a different heater that I purchased that is NOT heating the aquarium sufficiently.

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  • Most Helpful Critical Review

    Read All 10 Critical Reviews

    Too big for 5gallon

    By FishMom on Feb 19, 2022

    This is too tall for my tank. I have the 5 gallon Aqua Culture starter kit and it’s much too tall for my tanks water level. I’m sure it would work fine for a taller tank. Definitely going to try to return.

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28 Reviews

Showing 1-10 of 28 Reviews

  • 5 out of 5 stars

    Excellent purchase

    By on

    The best aquarium heater I have purchased. Extremely accurate and the appearance in the aquarium is elegant. In fact, I am purchasing another one to replace a different heater that I purchased that is NOT heating the aquarium sufficiently.

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  • 1 out of 5 stars

    Too big for 5gallon

    By on

    This is too tall for my tank. I have the 5 gallon Aqua Culture starter kit and it’s much too tall for my tanks water level. I’m sure it would work fine for a taller tank. Definitely going to try to return.

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  • 3 out of 5 stars

    very noticable

    By on

    This heater works OK. I have the white Edge tank so the silver and black on this heater make it very noticable, and due to it's large size, it's hard to hide. The best way to hide something is to make it blend in. This does not.

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  • 5 out of 5 stars

    Excellant!!!!

    By on

    I have a 6 gallon tank at my office that I got a preset heater for. My beta on the weekends when I wasn’t there the tank would get slight chilly for a betas liking. This one is preset to 80 and he is warm even on the weekends!

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  • 5 out of 5 stars

    Great Heater

    By on

    Pretty nice heater. I was sceptical about the glass cover but it does look nicer I think than plain black. The picture does not do it justice. I have it in a 5 gallon nano so no, it does not fit in the filter area if you keep the sponge. But it is fully submersible so you can put it like mine in the tank. The downsize is it is visible, the upside is it has no issue at all keeping temp. The smaller size ones might

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  • 1 out of 5 stars

    Fluval Heater

    By on

    I bought this for my beta tank, I set it up and everything and it doesn’t work. I don’t even think it heated up at all

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  • 5 out of 5 stars

    Fluval heater

    By on

    Very satisfied. Heaters can be hit or miss but this one is working, Only 3 weeks, like it should. I am hoping this one lasts for years like the other Fluval heaters I own.

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  • 3 out of 5 stars

    What’s to big for my tank

    By on

    Was to big for my tank trying to send the water heater back but the box came with no return label. Unnecessary frustration !!!!!

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  • 1 out of 5 stars

    went out after a few months

    By on

    This heater went out after a few months! I guess I should have bought a backup

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  • 5 out of 5 stars

    Great little tank heater

    By on

    I have 3 bettas and was using the tetra brand heaters which work fine. However one of my betta tanks sit in our sunroom and in the winter at night that room is the coldest in the house and the tetra brand heater could not keep the tank up to temp. When I would wake up the tank temp would be 74 degrees and with a +/- 1 variation I was not happy with the temp being at the low end of acceptable temps. So I decided to give this little heater a try and I am glad I did! I set this heater on 80 and the tank has been 79 degrees ever since. With a +/- of 1 on the tank thermometer (I have digital probes in tank) this is acceptable and I am very happy with this purchase! I just ordered 2 more to have I have 3 bettas and was using the tetra brand heaters which work fine. However one of my betta tanks sit in our sunroom and in the winter at night that room is the coldest in the house and the tetra brand heater could not keep the tank up to temp. When I would wake up the tank temp would be 74 degrees and with a +/- 1 variation I was not happy with the temp being at the low end of acceptable temps. So I decided to give this little heater a try and I am glad I did! I set this heater on 80 and the tank has been 79 degrees ever since. With a +/- of 1 on the tank thermometer (I have digital probes in tank) this is acceptable and I am very happy with this purchase! I just ordered 2 more to have on hand to replace the other 2 when needed. … more

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