With the Jager thermostat and heater from Ehei,, you can help your aquarium maintain the perfect temperature. Equipped with precise control, simple recalibration and an easy-to-read control lamp, this top-tier thermometer helps you create a comfortable home for your finned family. Safely submerging in your tank, the Jager is built with an ultra-modern, unique design that encases the heating surface in laboratory glass—which helps it keep your aquarium's heat levels steady. It even has an automatic dry run shut-off, so you know your habitat is always safe, too! Whether you're looking to heat a 20-liter tank or your expansive 1000-liter aquarium, there's a range of sizes to choose from.
Helps you maintain an ideal temperature with detailed adjustments—from 18-34 degrees Celsius.
Fitted in a "jacket" made of special laboratory glass to increase the heating surface inside your tank.
Completely submersible, with a double suction cup holder for easy set-up.
Keeps a constant temperature, always holding your chosen level of heat.
Suitable for both saltwater and freshwater environments.
I needed to get a new heater for a 40 gallon tank so I decided to try the 150 watt Eheim Jager heater. I've only had it for a short time but so far it's been working great. I set the temperature at 78, let it sit submerged for 30 minutes and plugged it in. It brought the tank temp up to exactly 78 and stayed there. Most of my other heaters are off by a couple of degrees, but not this one. I really like it so far. It is solidly built, has a very heavy cord and the on light is easy to see. Based on my initial experience, I highly recommend the Eheim Jager heater.
on Jun 30, 2020
I used this for my 40gallon turtle tank and its just what “they” needed!! Very well made! Bought the 75 gallon one just Incase I upgrade to a bigger tank in the future. I have it at 75 and it keeps it right around that temp. The dial is easy to see and it shuts off when temp goes higher. A nice red light u can see in the middle of the tube.
Ehiem 300 watt aquarium heater
on May 23, 2020
I've had the Eheim 300 watt aquarium heater installed for 2 weeks now. It keep my 75 gallon aquarium at a consistent 78 degrees. One word of caution, the heater is very long. Verify that it will fit your aquarium. So far it looks to be the best quality heater I've used. As for longevity only time will tell.
Durable & Accurate
on May 18, 2020
I purchased the 200W for my 55 gallon. It holds my tank at a 77.6F consistently. I do have it set two degrees warmer so it’s not 100% accurate, but I also have heavy filtration. It’s not an eye sore like some of the other heaters I’ve seen, which is nice. Well built and easy to adjust temp.
Does not work all that well
on Mar 4, 2020
I was really excited to get this heater for my betta because of the tons of good reviews I’ve read. Unfortunately this heater does not keep the tank at a consistent 80 degrees like I need. Would not recommend.
on Jan 4, 2020
I've only been using this heater for a few weeks so I can't comment on how it is after long term use, but it's been working well so far. I ordered this heater in a pinch to replace a different brand that decided to quit working. It has been keeping my 55 gal at a steady temperature with no noticed fluctuation.
Eheim Jager Aquarium Heater
on Feb 9, 2020
This heater works great. Have no issues with this product at all. I highly recommend it and I have had aquariums for over 40 years.
Excellent Fish Tank Heater
on Dec 9, 2019
This fish tanker heater is the very best that we have ever purchased. Powerful and durable.
Works like a charm!
on Oct 17, 2019
My tank is pretty long so it took a while to even out. In the beginning they both hung onto the heater and ended up knocking it around a lil bit lol
A little long
on Nov 18, 2019
Had to turn it diagonally to fit in my split 10 gallon tank, but it works very well.