A helping hand
for your journal.

Your journal and photos stay in the app’s local storage. There is no Aqua Air account or publisher-hosted cloud sync. Your operating system may back up app data if enabled in your device settings.

Open Settings → Backup and export a .aquaair file. Save it somewhere you can access on the new phone, install Aqua Air, and restore the file. Preview its contents before confirming: restore replaces the current journal. Keep the original copy until you have checked the restored tanks and photos. Backups are not encrypted by Aqua Air.

Check the schedule is enabled, the date/time is correct and Aqua Air has notification permission. Check Focus/Do Not Disturb and Android battery restrictions. Try the test reminder in reminder settings. Delivery depends on the operating system and may be delayed; reminders are not guaranteed exact alarms.

The current month’s completed water-change records are multiplied by the tank and enabled sump capacity. Cost uses your current configured rate per litre or per 1,000 litres. New records retain their capacity basis. Older records use the current tank capacity, and unknown volumes are flagged as incomplete. Top-ups, filter waste and fixed utility charges are excluded.

Open a tank and choose Record water test or the Water parameters tab. Enter only measured values, with the date/time and optional notes. Add a custom parameter for another unit or reporting basis. Latest results include each parameter’s measurement time, and history lets you edit sessions. NH₃ and NH₄⁺ remain separate; Aqua Air does not convert test bases or assign universal safety thresholds.

Open Settings → Language. Changes apply immediately and are saved on your device. The app supports eleven languages, including Vietnamese and English.

Use Settings → Delete all data and follow the confirmation steps. Export a backup first if you want to keep a copy. Exported files and operating-system/cloud backups must be deleted separately.

Keep an untouched copy of the file. Confirm it is a valid Aqua Air backup and that the app is up to date. If your current journal has a missing cover photo, remove or replace that cover first: creating the recovery copy requires existing photos to be readable. Do not reset your journal just to retry. Contact support with the error message.