Temperature sensor bulbs

[TiggrReefer]

I have a PaperBird controller for my heaters. It comes with 2 temperature sensing bulbs that are held in place by suction cups. The problem is that the suction cup comes loose, the probe floats to the top and occasionally out of the tank. This triggers the automatic shutdown mechanism in the controller and shuts off my heater because it thinks there is something wrong. What do you do to prevent this from happening? Either a better way to attach the bulb or whatever to avoid this problem??

 

[Saltyreef]

I have a PaperBird controller for my heaters. It comes with 2 temperature sensing bulbs that are held in place by suction cups. The problem is that the suction cup comes loose, the probe floats to the top and occasionally out of the tank. This triggers the automatic shutdown mechanism in the controller and shuts off my heater because it thinks there is something wrong. What do you do to prevent this from happening? Either a better way to attach the bulb or whatever to avoid this problem??

https://a.co/d/9f4IXwI