No I use ink bird as a backup to the one that comes with the H2Pro titanium heaters. I have never had the H2Pro ones fail, but you never know. I also have an audible alarm that sends a message to my phone just in case.
The number one actual failure I have had over the years is heaters and return pumps. If you put the alarm probe in the tank, not the sump, you will also know if they return pump fails because the temp will drop because the heaters are in the sump.
BTW, the tank is drilled and overflow mounted.
I am going back over the fasteners on the stand to make sure they are tight and adding two more cross bars.
The Tunze fuge light came in yesterday. Nicely made and really bright considering the wattage.
I may, eventually switch to the Tunze reactor someone so nicely gave me. If I do that, then the fuge section will become a frag setup.