Eheim heater thermocontrol & thermopreset not working correctly

Shark888

New member
Hello,

Today I got two glass heaters : Eheim thermocontrol 100W and Eheim thermopreset 100W but unfortunately no one of them are working correctly at this moment. I firstly added the Eheim thermocontrol directly to my main reef tank (96L) and I noticed immediatly that the temperature was dropping slowly and when I touched the hot part of the heater it was only a little warm.

I decided then to put back to the tank my old stainless steel heater which is still working fine.

And I added both heaters to one recipient of 50 liters for testing, it has been so far 6 hours and a 10 degrees celsius water reached 14 degrees celcius with both heaters ON on a recipient of 50L. WOW. Im getting crazy. :headwallblue:

Need some advise, I forgot to say that Im new on this hobby. :debi:
 
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