Time-away plan
Away when power outages are likely: aeration and back-siphoning
Planning for a power cut while away: battery-backup air pumps and their stated runtimes, check valves against back-siphoning, and unknown smart-plug behavior.
Also listed as power cut, storm season, outage
We may earn a commission if you buy through links on this page, at no extra cost to you. Unless a page says otherwise, our picks come from published specifications and listing research, not hands-on testing. As an Amazon Associate I earn from qualifying purchases. How we make money · How we research
Short answer
In an outage, filters and pumps stop and water can siphon back into a pump below the tank. Fit a check valve outside the water. Aquarium Co-Op's battery-backup pump switches to its battery automatically and states about 20 hours continuous or 40 hours in Power Save; those are maker figures. TP-Link does not say how the Kasa EP25P4 behaves when power returns.
Key facts
- Feeding plan
- Battery feeders keep running without mains power[1][2]The F14 runs on one AA; EHEIM's autofeeder on two AA alkalines.
- Feeder test
- Run any feeder at home first[1]
- Aeration backup
- Battery-backup pump: Aquarium Co-Op states about 20 h continuous, 40 h in Power Save[3]Maker figures for units sold from 8/1/2024 (earlier units: 8 and 16 h). Power Save cycles 15 s on, 15 s off. It can also run from a USB power bank.
- Lights
- Not confirmedTP-Link does not say whether the EP25P4 restores its state or runs schedules without the cloud.
- Water quality
- Water movement and open surface drive oxygen uptake[4]From one 2020 study of 54-liter tanks; not a universal standard.
- Sitter check
- Not confirmed
Watch out for
- Runtime is a maker claim. Aquarium Co-Op's battery figures are its own, not an independent measurement or a promise about livestock, and the printed manual still shows the older 8/16-hour figures.
- Not shipped everywhere. Aquarium Co-Op says its battery-backup pump is not available for shipping to Hawaii or Alaska.
- Smart plugs are an unknown after an outage. TP-Link does not state the EP25P4's restore behavior; a sitter should check lights after power returns.
What fits
Product details below are the seller's own description unless a source is shown. Pick the variant named for each item.
Airline tubing
Penn-Plax Aqua-Life standard airline tubing, 3/16 in, 25 ftChoose the 25 ft, 3/16 in roll. On Amazon, check that 'Ships from / Sold by' names Amazon.com or the brand before you buy.
Standard 3/16 in per the listing, not 4 mm metric: match it to your pump outlets and check valves. Aquarium Co-Op says all airline eventually hardens; trim the hardened end before refitting.
Check price on Amazon Opens amazon.comBattery feeder
Fish Mate F14 automatic aquarium feederChoose the F14 feeder. On Amazon, check that 'Ships from / Sold by' names Amazon.com or the brand before you buy.
Runs on one AA alkaline battery. Fish Mate's manual says to sit it over a 30 mm (1-1/4 in) hood hole or on its two supplied clamps, and to supervise a new unit for 14 days while you are home. That is the maker's advice, not reliability data.
Check price on Amazon Opens amazon.com
See battery-backup air pumps and aquarium power outage while away.
Questions
How long does a battery-backup air pump run?
Aquarium Co-Op states about 20 hours continuous and 40 hours in Power Save mode for units sold from 8/1/2024, and 8 and 16 hours for earlier units. These are maker figures, not independent measurements.[3]
Will my smart plug turn the light back on after an outage?
For the Kasa EP25P4 we cannot say: TP-Link does not state whether it restores its previous state or runs schedules without the cloud. Ask your sitter to check after any outage.[7]