A spare heater and a spare powerhead. That's about it for my emergency preparation.
I have a 20 gallons tank just in case but I never have water ready at all time. I do my water change once a month so only once a month that I have water ready to use.
Do you keep water ready at all time? Wondering how long a batch of water can stay on the side like that?
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More fish die from human stupidity than any other disease...
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