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EHEIM Jager Aquarium Thermostat Heater 25W

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.

Product Features

  • 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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  1. Kerry A. Hostetter " own ... says:

    splurge for this, it’s worth it My 10yo daughter and I are just getting started with fish. We live in a cold climate and wanted her tropical fish to have the right temperature when the thermostat is turned down during the day. Occasionally I come home for lunch, and this heater has no problems holding the temp 12 degrees warmer than the rest of the house during the day. It is easy to set for a precise temperature, and in the last few weeks I have never seen the tank temp even vary at all. Basically you plug in the heater (once it is in your tank), check your thermometer over the next hour for the actual temp of the water. Then you turn a ring on the heater so the arrow points to the exact temp. There are degree markings to raise or lower your tanks temperature. To start with, I set the heater to 74degrees. It actually settled at about 76. After adjusting the setting ring, I turned the tank up to 78 and it has held steady at 78 ever since. It seems like all of the smaller “preset” heaters have some that work great and others of the same model have major issues and fry the fish. This German made heater has a reputation for lasting 15+ years. This 25watt heater is good for 2gallons up to 7, the 50w is for 7 gallons up to 16 gallons. Buy this heater and you will have peace of mind that your fish are warm and safe!

  2. S. Rome "sterlingrome" says:

    perfect for 5 gallon tank I hesitated to buy because this product was sparsely reviewed, but I am adding one because so far this heater has been exceptionally accurate and good.It is well made and easy to install and has been perfect for my 5 gallon tank. Recommended Hydor and Top Fin small heaters (not adjustable) provedunfit to raise the temp in my tank to a consistent level — and nowhere near optimum.

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