I've had up to four days without power and no loss of fish. I have internal filters and gravel filters on my various tanks. I think a canister filter might not do to well - it might get stagnant and foul... I didn't do anything to help aerate the water, but my fish didn't show any signs of distress. I also didn't feed them at all during the outage. I only had adult fish, no babies.
I would think your goldies should be ok. Maybe scoop and pour some water to help aerate it. I would rinse canister filters before restarting them, if you have that kind of filter. It would be best to go into the power outage with clean water, but you can't always plan that. I really think they will be ok.
I would think your goldies should be ok. Maybe scoop and pour some water to help aerate it. I would rinse canister filters before restarting them, if you have that kind of filter. It would be best to go into the power outage with clean water, but you can't always plan that. I really think they will be ok.