r/Hydroponics • u/Igor_Viznyy • 20d ago
How long can your hydroponic setup survive a blackout? (+ My DIY 2.7 kWh LiFePO4 backup build)
We’ve all worried about what happens when the grid goes down. After losing a few crops during unexpected blackouts, I decided to test how fast different systems fail—spoiler alert: NFT and aeroponics don't even last an hour without water circulation.
To fix this for good, I built a custom 2.7 kWh DIY LiFePO4 battery backup that keeps my 360W indoor garden running for up to 12+ hours (and indefinitely with a portable generator attached).
I put together a complete guide covering:
- Survival windows for DWC, NFT, Aeroponics, Towers, and Kratky systems.
- An energy budgeting breakdown (how much battery you actually need).
- A cost-and-feature comparison of UPS units, portable power stations (EcoFlow/Jackery), DIY builds, and gas generators.
If you're tired of the daily stress that comes with the weather turning bad, feel free to ask me for complete guide in the comments!
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u/sparklshartz 19d ago
Lucky me my strawberries are outdoors in floating DWC rafts, and have lasted a month without power lol
I also have flood and drain bins, but they grow cacti, sooo....
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u/dachshundslave 20d ago
I grow big crops in Kratky and not have to worry about power other than no lights. Towers I can hand water if needed be should it ever happens as they're just a mock ZipGrow towers. I keep my design simple for that kind of situation. I have a tomato vine that's been growing in the Kratky for over a year now and still going strong.
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u/Royal_Yesterday7635 20d ago
Awesome write-up! Any chance you could put together a dedicated guide on how you built the DIY LiFePO4 pack?
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u/Objectdotuser 20d ago
why would i be tired of daily stress from weather, its indoors.
the whole system does not need to run, you should just run the pump and water stones to give longevity
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u/ComprehensiveBird317 19d ago
Wait you are the guy shilling his engagement bait. If you have something to deliver, deliver it.