For emergencies, how much extra treated water does Florida Sea Grant suggest keeping on hand?

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  1. About 1 percent of the tank's volume
  2. At least 10 to 20 percent of the volume
  3. None, use untreated tap water

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References

  1. Florida Sea Grant: Q&A, How to Keep Your Fish Tank Safe During a Power Outage www.flseagrant.org/qa-how-to-keep-your-fish-tank-safe-during-a-power-outage Checked 2026-10-11.

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