Heat Tape Dying?

Yesterday, i noticed that my thermostat was saying my BPs heat tape was 130F. I quickly turned the heat off and replaced the thermostat. I thought the thermostat was the problem. I plugged it back in and the thermostat was saying 120F. Its not lowering my temps. They keep climbing even though the thermostat isnt telling it to heat up. Its set to 87F right now. Is my heat tape dying?

Did you check the thermostat temp probe? Perhaps it needs replacing or came loose? Someone else recently had a temp probe issue that caused false readings that were unusually high.

Yes its in the same place its always been. I changed the whole thermostat and temp probe and its still doing it.

Do you have a backup thermostat to try swapping out?

Yea im using my backup now. I have the first one but once I thought it died I started using my backup.

Your thermostat regulates the heat source.
Sounds like that thermostat failed as long as the probe is in a good spot.
Have you checked the heat tape with a thermometer?
What is the temp of the tape with the other thermostat?

The tape at the back where the cables are is 84 and the temp in her hide is 90-100. This is a brand new thermostat that I just took out the package yesterday. The old thermostat did the same thing yesterday. The probe is in the right spot and the temp is set to 87. The thermostat says it isnt heating but the temp keep climbing

What brand thermostat are you using?
Can you post some photos of your setup?

Where do you have the probe?