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EHEIM Jager Aquarium Thermostat Heater 75W

4.5 out of 5 stars 4,160 ratings

Price: $134.76
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75 Watts

Enhance your purchase

  • Fully submersible
  • Thermo safey control protects against running dry
  • Will automatically turn off when water level dips too low
  • TruTemp dial recalibrates the heater for precise temperature regulation
  • Made of shock resistant and shatter proof glass for fresh or marine water
  • On/Off indicator light for at-a-glance monitoring

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Product details

Wattage:75 Watts
  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Date First Available ‏ : ‎ 21 September 2018
  • Manufacturer ‏ : ‎ Eheim
  • ASIN ‏ : ‎ B003SNO8VS
  • Item Model Number ‏ : ‎ 3613090
  • Customer Reviews:
    4.5 out of 5 stars 4,160 ratings

Frequently bought together

  • EHEIM Jager Aquarium Thermostat Heater 75W
  • +
  • Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1
  • +
  • API Test Kit
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Product description

Wattage:75 Watts

All 9 EHEIM Heater models are 100% fully submersible and come with a new TruTemp dial that allows the user to recalibrate the heater within a +/- 0.5F degree accurancy for precise temperature readings.


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4.5 out of 5 stars
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4,160 global ratings
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Alan Folley
5.0 out of 5 stars Five Stars
Reviewed in the United Kingdom on 3 June 2015
Wattage: 50 WattsVerified Purchase
One person found this helpful
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Stephen A.
4.0 out of 5 stars Time will tell...
Reviewed in Canada on 13 May 2019
Wattage: 300 WattsVerified Purchase
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4.0 out of 5 stars Time will tell...
Reviewed in Canada on 13 May 2019
The two Hydor Theo 300W heaters I had suddenly became sporadic in heating my 100 gallon freshwater aquarium a few weeks ago. These heaters were about 5 years old. It turns out when I removed them from the water I saw that one of the heaters had burned out (blast mark on the inside glass tube). So I decided to try these Eheim Jager models since the feature of the recalibration function seemed like a good idea and majority of the reviews I've come across have been positive. I ordered two 300W heaters to replace in kind.

Well, when they arrived they were packaged in a very long narrow box. Turns out the heater itself is very long, heater itself is almost 20". As a result it cannot be placed straight vertical in the tank like the previous Hydor. Also, on the box there is a list of what capacity of tank each model of heater wattage can support. In this case the 300W supposedly supports 159-264 US gallons. Normal rule of thumb for tropical heating is 3-5w per gallon. Because of the size of the heater alone I was going to just use one, which I did for the first few days. However, the heater seemed to struggle with maintaining the desired temp of about 80°F, even with the recalibration settings. Heater seemed to hold steady @ 78.3°F (make sure you have an accurate thermometer!) and I could not get it above this. Defective heater? Hard to say at this point.

So today (May 10) I decided to add the second heater which I was originally going to keep as a back up. I set it to 80°F and have not made any calibrations to it yet. I will see about resetting the first heater once I get I new temp reading.

[update, May 20]: with both heaters set to approx. 80°F the water temp is holding at 80.4°F. Fish are happy.

As for the quality of the heaters, they seem durable and the power chord is nice and robust, albeit a bit on the chunky side. Glass tube seems to be very impact resistant. The suction cups will be questionable as most in a submerged setting never seem to hold their grip over time. The plastic temperature dials are a tad tight to adjust. It takes some effort and can't easily be turned when the heater is mounted to the glass under water. Any adjustment I've had to make has to be performed with the heater unplugged and removed from the aquarium. I'm hoping once the calibrating is successful, the adjustments will stop.

In the photos you can see both heaters in place and the angle they are at to allow full submersion without tube end touching gravel. Yes, these are long! Time will tell on how good these turn out to be.
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4 people found this helpful
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HRM
3.0 out of 5 stars Not precise setup
Reviewed in Canada on 27 February 2021
Wattage: 150 WattsVerified Purchase
2 people found this helpful
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AmazonCustomer
2.0 out of 5 stars Found 2mm loose copper wire sitting in the heating element.
Reviewed in Canada on 28 January 2018
Wattage: 75 WattsVerified Purchase
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2.0 out of 5 stars Found 2mm loose copper wire sitting in the heating element.
Reviewed in Canada on 28 January 2018
Amazon sent me the replacement. This one has a small piece of loose plastic inside. It settles on the bottom after shaking it. I suppose it wont cause electrical problem so I decide to keep it.
These are made in dirty or untidy factory in Germany.
I sent email to Eheim support but get no replies from them.

6 months later:
Suction cups went so I bought 4 replacement. Not sure how long they will last.
I have Filstar filter, their suction cups still work after 3 years.
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5 people found this helpful
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Stitchfeather
5.0 out of 5 stars Excellent heater, very easy to use
Reviewed in Canada on 25 January 2019
Verified Purchase
4 people found this helpful
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