I posted this before, but here it is again, maybe.....its apropos, and might help others
We had a power outage a while back that lasted a day, not a problem.
But when the power was restored, the ensuing power surge fried my tanks water pump, and two ceiling fans.
Being isolated on an island from the Covid crisis, it took almost a month to get a replacement, so no water movement or aeration for that duration.
I was able to keep the bacteria in the sump alive by pouring @ 4 gallons of water into the tank once every "daylight" hour, it overflowed into the sump, which then overflowed into the yard.
I only lost 1 fish during that time (probably not enough O2), and the filter seemed to handle the lag.
I used gallon jugs with a hole punched to break surface tension of the tank.
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