Sorry for your lost.
I wonder if it was the heavy rain lately?
2 days ago, there was a power trip at home (only 1 circuit breaker) for about 6 hours but luckily mine is a simple planted with tropical fishes, so probably the oxygen level in the tank is sufficient for small fishes. Coincidentally, the carpark's gantry system for the big carpark area all tripped. Last night, the gantries were still malfunction.
So happened to touch the water of my tank, and felt some electric 'bite' on my fingers... found the small pump back cover dislodged and had it removed. No more current. My case of power trip could be the submersible pump.
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