Protect the essentials
During an outage, the filter and air pump stop. Keep the aquarium covered if room temperature is stable, and avoid opening it repeatedly. If available, manually agitate the surface or use a battery air pump to support gas exchange.
Monitor temperature rather than adding hot or cold water. The risk depends on outage length, room conditions, tank size, and stocking.
Restart carefully
When power returns, confirm that the filter resumes flow and that no stagnant water or trapped debris is flushed into the tank. Check shrimp behavior and test ammonia if the outage was prolonged.
Do not overfeed to compensate for a short outage. If the aquarium has been without circulation for a long time, restore aeration first and make any water changes based on test results.
For your own tank
Before an outage happens, identify a safe way to add aeration and learn how long your room usually stays warm. Avoid feeding heavily during a prolonged interruption. When power returns, check the filter and test water rather than assuming everything resumed normally.
Use these as general hobby references. Test your aquarium and confirm product guidance before making changes.