Hydor THEO Submersible Aquarium Heater 50W UL

$22.49 $20.79
(as of 31/10/2010 03:43 - info)
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  • High resistance – the first shatter proof heater
  • Shock resistant
  • Position vertical, horizontal and completely submerged
  • Graduated scale for precise maintenance of set temperature
  • No damage in case of running dry

Theo Heater. New aquarium heater functioning with the exclusive PTC technology means that this heater will not break or damage when run out of the tank. Theo aquarium heater has all the necessary feature for safe and precise temperature maintenance of the water in your tank. The exclusive technology and the high quality of components guarantee a long lasting product.

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1 Comment

  1. Hatty says:
    Posted July 26, 2010 at 12:00 am | Permalink

    I thought Theo was suppose to be a good aquarium heater. The reason I disagree with the reviews I read in the past is that the heater is unable to keep my aquarium at the temperature I’d like. No matter how low I set the dial, it still keeps my tank at 90 degrees.

    The overall form factor of it is quite nice. Easy to operate and set up. Because of those things, its not a total loss. I just wish it would turn off when the desired temperature has been reached.

    And for those out there who are wanting to ask: I have a 10 gallon tank (even though that doesn’t matter. I should be able to get a 200 watt heater and have it work since it should just shut itself off when it gets to temperature). I have tried unplugging it and plugging it in, but that doesn’t work. And it hasn’t been taken out of the tank without first being turned off (even though it is able to cope with this).


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