I recently had a power outage as well. It was for more then 24 hours (about 28 hours). When I called pepco, they gave a 2 day time span for getting the power back on, so I immediately ran to the store to get a battery powered airpump.
The fish were fine, but when the power did come back on, the water was definitely cloudy (I did a 50% water change and everything is great again). I also tested the water multiple times, and did some light dosing with prime when I saw a tiny ammonia spike (to 0.1. Yup not on the chart, but it definitely wasn't zero, and it definitely wasn't 0.25).
Here are my questions.
1. This one goes to wendyjo! Does the battery backup airpump run continuously all the time, or can you set it to engage only if the power goes out? I don't really like the look of airstones running all the time, but I'd love to have a system buried in the tank that engages if the power goes out (and I'm not at home).
2. Has anyone had any success with computer driven UPS backup units? From what I've read on the forum, they tend to have a large draw, even if nothing is connected to them, causing even low wattage equipment to only last about 20-30 minutes. (My XP3 uses 13 watts).
3. For my next outage, I was planning on using yee old staple corner box filter with a battery powered airpump. I was thinking of putting a bag of purigen in it, along with filterfloss/aquaclear sponge material. What do you guys think?
I'd enjoy any other suggestions!
One last thing. What do you guys do about your canister filters? I imagine after a few days the good bacteria might start dying off. Wouldn't that toxin shock the tank when the power came back on?