Eheim Jager heater problem? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 01-15-2012, 05:42 AM Thread Starter
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Eheim Jager heater problem?

I have a 300 watt Eheim Jager heater (with the red and blue dial). I've had it for about 9 months and within the last week it went from holding its temperature of 80 degrees and then dropping to 74-76 degrees. I've tried recalibrating the heater and it still didn't change the temperature. I've also tried turning the heater up to 85-86 but the warmest the tank gets is 77 degrees.

I have a 180 gallon aquarium.

I've tried emailing Eheim but they just resent the instructions to recalibrate (which I have) and they mentioned ambient room temperature changes as well (it's about 76 degrees in the room that the tank is in)

Any help is appreciated!
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post #2 of 3 Old 01-15-2012, 08:14 AM
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Is that the only heater in the tank? With a tank that size it's best to have two - one on either end (ish).

I've got 2 in my 75 gallon but it gets frigid here in the winter and we keep the heat down to 60 or 65 overnight.

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post #3 of 3 Old 01-16-2012, 08:20 AM
I have two (200w / 250w) in my 60g.

I also think you should add another 250w or 300w heater.

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