Same thing happend to me when I woke up my tank was at 68. After that I got an InkBird and an bought an extra heater.
I got tired of the turbos knocking it lose. Plus the aesthetics of it.Anyone run the heater in the tank too (I saw some mention of that) just incase the return pump is off or fails? Im going to run 2 but just deciding if I need a third in the tank itself or just run 2 in the sump.