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Question about heater - Eheim Jager TruTemp 50W


Zer0

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So I've had this heater running for a few days now, but it doesn't seem to operate properly, unless I'm doing something wrong. I set the temperature regulator to 79 degrees F, but it never heated up my tank to 79 degrees, it just hovered around 76-77 degrees. I have to set the regulator wheel to 83 to get the water temperature to a relatively stable 78-79 degrees. That seems sketchy to me. Is this heater just a piece of crap, or is this normal operation?

 

I have a 10G tank btw

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Christopher Marks

Sounds untrustworthy. Is it new or have you had it awhile?

 

The favored approach is to use an Inkbird ITC-308S temperature controller, which acts as a precise thermostat for any basic aquarium heater. The heater plugs into the Inkbird, and the Inkbird has a temperature probe of its own that goes into your tank, which determines when to turn the heater on and off for more precise heating. This way you are not depending upon the unreliable thermostat in a cheap heater, the Inkbird takes control.

 

If your heater is older, I would consider replacing it as a precaution. An Inkbird can prevent overheating, and sound an alarm if a tank gets too hot or cold, but you should still attach a newer heater to it, for peace of mind.

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2 hours ago, Zer0 said:

I set the temperature regulator to 79 degrees F, but it never heated up my tank to 79 degrees, it just hovered around 76-77 degrees. I have to set the regulator wheel to 83 to get the water temperature to a relatively stable 78-79 degrees. That seems sketchy to me. Is this heater just a piece of crap, or is this normal operation?

 

I have a 10G tank btw

I wouldnt' worry about it.  I just got rid of a 10 year old Eheim that finally got stuck on the " ON " position.  Worked great the whole time, but the temp dial was never accurate. That's why we have thermometers on tank. 

 

Set the heater to match your desired temp and not worry about it.  That'd be my course.  But it's your tank.

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The Eheim Jager has two dials. One is to actually regulate the temperature and the other is to calibrate it. If you are testing the water at a stable 79 degrees but the regulator says 83 then turn the red arrow to say 79 degrees. 

 

Other than that, I've found the Eheim Jagers to be relatively reliable although running a controller like Apex or inkbird adds a second layer of security.

 

 

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3 minutes ago, Chutsk10 said:

The Eheim Jager has two dials. One is to actually regulate the temperature and the other is to calibrate it. If you are testing the water at a stable 79 degrees but the regulator says 83 then turn the red arrow to say 79 degrees. 

 

Have been rocking Eheim Jaegers for years and I didn't know that - thanks. 

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Simulated Fish
1 hour ago, Zer0 said:

I'm going to look into the Inkbird, seems like a nice piece of equipment to have. The heater is brand new.

what method are you testing the temp with?

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seems pretty standard. i messed around with 4 heaters recently and none were able to get it exactly what the dial was set for. Temperature was also a couple of degrees off, even the eheim 50W. 

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13 hours ago, Chutsk10 said:

The Eheim Jager has two dials. One is to actually regulate the temperature and the other is to calibrate it. If you are testing the water at a stable 79 degrees but the regulator says 83 then turn the red arrow to say 79 degrees. 

 

Other than that, I've found the Eheim Jagers to be relatively reliable although running a controller like Apex or inkbird adds a second layer of security.

 

 

Yep I got caught out with this only last week 🤣

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I’ve always used eheim jager heaters for the past 10 years. Sometimes they do need to be recalibrated like was mentioned, but beyond that I’ve never had any issues. Even ran one dry on accident for 48 hours and it was fine after. Don’t recommend doing that but they are workhorses!

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