# SereneSea - Reef Tank Journal — Water Logs, Tasks & Reminders > Water Logs, Tasks & Reminders (iPhone/iPad app by ZHAOWEI KE.) - Source: https://appshunter.io/ios/app/serenesea-reef-tank-journal/id6789619652 (this page in markdown: same URL + `.md`) - Developer: [ZHAOWEI KE](https://appshunter.io/developer/6789619654) - Category: Lifestyle, Utilities - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.1 · 226 MB - Languages: American English - Released: 2026-07-27 - Data updated: 2026-09-04 - User reviews in markdown: https://appshunter.io/ios/app/serenesea-reef-tank-journal/id6789619652/reviews.md ## What is SereneSea? When keeping a marine tank, data is rarely missing—it's usually scattered across test logs, note apps, photo galleries, and various tools. SereneSea centralizes water parameters, maintenance routines, livestock, equipment, photos, and key changes into a single tank profile. It helps you not only log today's details but also look back and truly understand your aquarium's journey. 【Water Parameters & Long-Term Trends】 Track essential marine metrics like Ca, Mg, KH, NO3, PO4, salinity, and specific gravity, or add your own custom parameter items. Use trend charts to review long-term changes over time, cross-referenced with dosing and lighting adjustment logs to clearly see the impact before and after every tweak. 【AI Import for Historical Water Logs】 No need to manually re-type old water parameter records stored in notes, spreadsheets, screenshots, or other places. SereneSea provides a structured prompt/format—simply use your preferred AI tool to organize your raw data and paste the result back into the app. Preview, edit, and select which entries to keep before importing. Nothing is written to your official records until you confirm. 【Maintenance & Reminders】 Set up schedules for water changes, cleaning, additives, and equipment maintenance, and track both pending tasks and completed history. Every completed task leaves a historical record, so daily care no longer relies solely on memory. 【Livestock, Equipment & Consumables】 Centralize records for fish, corals, hardware, and media, including name, category, date, price, notes, and more. Includes AI Import for livestock and equipment—batch-organize your old records and verify each entry in the app before importing. 【Photos, Milestones & Tank History】 Keep tank photos and major events together on a unified timeline—including livestock additions, hardware upgrades, parameter adjustments, and tank status changes. Over time, SereneSea becomes more than just a logging tool; it becomes the growth history of your reef tank. 【Shared Tank Maintenance】 If your aquarium is cared for by more than one person, use the Shared Maintenance feature. Co-maintainers can view shared tank data, complete scheduled tasks, and add water records or milestone events, reducing repetitive actions and communication gaps. 【Backup & Restore】 Supports ZIP file export/import as well as optional Google Drive cloud backup. Years of accumulated tank records don't have to stay trapped on a single device. 【Practical Tools for Marine Aquarists】 Includes built-in calculators and helper tools for marine tanks, keeping testing, maintenance, and daily management all in one app. 【Built for Marine Hobbyists】 Find local marine aquarium shops in Taiwan, making it convenient for both tank management and real-world store visits and purchases. Core features can be used immediately without account registration. Simply choose to sign in with Google Drive when you need cloud backups or shared maintenance. Primary tank care features are free to use; VIP is available mainly for an ad-free experience and to support ongoing development. Record every change in your reef tank with care. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | QuietSea VIP Monthly | $1.99 | per month | | QuietSea VIP Yearly | $17.99 | per year | ## Version history (last 5 releases) ### 1.0.90 — 2026-08-29 What’s New • Introducing the new Virtual Aquarium: let the fish you record swim in your own digital tank • Includes 100 marine fish avatars with image and name search • Different fish species now have distinct swimming styles and movement ranges • Added interactive feeding, fullscreen viewing, and customizable aquarium backgrounds • Improved fish avatar selection and management • Added access to a beginner’s guide to marine aquariums • Fixed bugs and improved overall stability ### 1.0.85 — 2026-08-19 This update makes bringing your existing tank data into SereneSea easier than ever. • New: AI Import for Historical Water Logs Organize old water parameter data from notes, spreadsheets, screenshots, or other sources using your preferred AI, then paste into the app to preview, edit, select, and import. • New: AI Import for Livestock & Equipment Batch-organize details like name, category, date, price, and notes, with the ability to review and edit each entry prior to importing. • Enhanced AI Import Flow: Improved auto-completion for missing dates, field mapping, duplicate warnings, and preview workflow. • General UI improvements and stability enhancements. AI only assists with organizing data. All content must be reviewed and confirmed by you before being added to your official records. ### 1.0.80 — 2026-08-10 This update includes several improvements and bug fixes: • Fixed known issues and improved overall stability • Improved the format and presentation of water parameter records • Improved shared tank maintenance and cross-device synchronization • Refined several workflows and interface details Thank you for using SereneSea. Feedback and suggestions are always welcome. ### 1.0.56 — 2026-07-28 Optimized data storage format to prevent lag from large datasets. ### 1.0.55 — 2026-07-27 No release notes. ## Related topics [reef tank](https://appshunter.io/ios/topics/reef-tank) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*