From your marine aquarium to the ocean, and back to your tank with what you learned. REEF FOLK is a journal for widening your interest as you go back and forth between tank and ocean, and an app for keeping the records of your marine aquarium.
Photo: a coral reef in Okinawa
A journal, and records, comparisons and Q&A for your tank. Because the two are connected, one discovery leads to the next.
Reefs we visited, research summaries and interviews with people connected to the sea. The journal is open to everyone, no account needed. Creature names in an article link to that creature's page.
Acropora, Acropora tenuis and more: each genus and species page brings together how it lives in the wild and the public tanks, water ranges and posts of people keeping it. Fish, anemones, shrimp, clams and macroalgae have pages too.
Log water tests quickly, starting from your last values, or paste any text and let AI fill it in. A placement map with pins on your tank photo, photos of each animal, water changes and equipment changes all live on one page.
Search public tanks, posts and questions by volume, lighting, system, livestock and 3-month water averages. Find a tank you want to learn from, and overlay up to four tanks' water trends.
Attach your water values and a tank photo from any point in time to a question, so people can see how things changed. Choose the most helpful reply as the best answer, and send thanks to the people who answered.
Ask Reef bot in the corner: it searches the journal, posts, questions, public tanks and species pages, and looks at your own tank records. It remembers what you talked about, so you can pick up where you left off.
Add your tank, water tests and photos of your livestock. Bring existing records in by CSV.
Learn about coral reefs in the journal, and compare water and photos with similar tanks.
Ask a question with your records attached, or ask Reef bot. Check the results in your records.
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¥780 / month · ¥7,800 / year
Until the community grows, every feature is free for everyone.
The operator, Little Barrier Reef: reefs we visited, research summaries and interviews with people who work with corals. Anyone can read it without an account.
It answers marine aquarium questions and finds articles, posts, questions and tanks in REEF FOLK, using your own tank records too. Free accounts can ask 4 times a month, Premium up to 300.
Yes. Core features such as tank records, publishing and posting are free. A Premium plan (¥780/month) adds full-history comparisons and deeper search, but every feature is free for everyone until the community grows.
Yes. It runs in the browser on both computers and phones — no app install needed.
Each tank can be public or private, and starts out private. Location data embedded in photos is removed automatically when you upload.
When logging a test you can choose the kit or device you used (Red Sea, Salifert and more), and add your own if it's not listed.
Yes. You can import water records from a CSV file and check how columns map to parameters before importing.
