Sorry for your loss.
I just had a heater explode in a tank the other day.
luckily, nothing was in it but liverock. No more glass heaters for me, VisiTherm Stealth are the only way I'm going from now on.
__________________
Current setups: 1800 gallon koi pond, 10 gallon planted, 150 gallon reef, other FOWLR tanks