Cobalt thermometer malfunction!!

[nickenayat]

I have two tanks a Red Sea REEFER and a IM Nuvo Fusion. Both with Cobalt aquatics thermometers.

In the IM I noticed that the corals were starting to bleach. All the parameters were in check all, low nitrates, flow was good, salinity was good. I had been kind of neglecting the tank but not to the point of death.

After about 10 days I was going to do a water change. When I removed the lid and put my hands in there, the water so hot! I checked the thermometer and somehow it set itself to 92 degrees and the water was at 90!

I’m so mad it was such a simple problem and all this could have been avoided. I will post pictures of the drive station soon.

Does anyone know how or why this could’ve happened? Anyone deal with a similar problem?

 

[Crabs McJones]

Do you keep your heater on any kind of controller such as the apex or an inkbird (or similar)? something like this could have helped prevent this by killing power to the heater when the temperature got to high

 

[Orcus Varuna]

I have two tanks a Red Sea REEFER and a IM Nuvo Fusion. Both with Cobalt aquatics thermometers.

In the IM I noticed that the corals were starting to bleach. All the parameters were in check all, low nitrates, flow was good, salinity was good. I had been kind of neglecting the tank but not to the point of death.

After about 10 days I was going to do a water change. When I removed the lid and put my hands in there, the water so hot! I checked the thermometer and somehow it set itself to 92 degrees and the water was at 90!

I’m so mad it was such a simple problem and all this could have been avoided. I will post pictures of the drive station soon.

Does anyone know how or why this could’ve happened? Anyone deal with a similar problem?

I stopped using cobalt heaters after multiple neotherms I had failed. A 150 completely exploded on me, the replacement 150, sent to me by cobalt, started leaking current after a few months and a 3rd one, this time a 75 watt on another tank, also leaked current. After these 3 failures I went to Finnex titanium heaters and haven’t looked back. Not your exact issue, but based on my many issues this does not surprise me. Also, as was beaten into my head from our friends here on the forums, this is why you should always invest in a failsafe such as an inkbird. They are only about $30 and will turn off the heater if the internal thermostat fails.

 

[SynGraves]

Im currently using a cobalt heater on my tank with no issues at the moment. Im gonna have to keep an eye on the leaking current issue. I've gotten myself into a goo routine of checking basic parameters like temp and salinity every 3 days or so just to make sure everything is working as it should. Since my tank is a nano i dont really have much room for error