Your Personal Reef Tank Expert
Keep your corals healthy, the tank stable and know when an action is needed.
Give your hobby the structure and intelligence it deserves
Built by a reef tank hobbyist to simplify the everyday tasks of testing, logging, and keeping water parameters steady. Coralist connects your test results, dosing routines, hardware setup, and livestock in one clear view. All of this feeds into a marine-expert AI agent that identifies patterns, spots emerging problems, and proposes practical advice and maintenance tasks tailored to your tank.
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Digital Logbook Log tests, dosing, and livestock without water-damaged paperwork or spreadsheets.
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Configurable Dashboard Track the parameters you care about with custom target ranges and color-coded status.
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Stability Index Trend Chart Stability is king. Watch long-term trends and focus on flattening the curve.
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AI Water Test Analysis Understand your overall water state and get practical advice on your test results.
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Smart Task Lists From cycling programs for new tanks to maintenance routines that keep mature reefs thriving — the AI assistant can generate a program tailored to your setup.
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Context-Aware Personal Assistant Ask for dosing guidance, maintenance schedules, or check whether a coral or fish is compatible before buying at your local store.
Designed to simplify and support your hobby
From weekly water tests to stocking decisions at your local fish store, Coralist gives you the clarity to keep your tank thriving.
Digital Logbook
Testing saltwater with a paper notebook nearby usually ends with wet, stained pages and lost records. Spreadsheets store numbers, but they won't help you learn from them or alert you when an alkalinity drop lines up with coral stress. Coralist keeps your water tests, livestock additions, hardware setup, and equipment maintenance together—so you can easily connect the dots and understand how changes impact your corals and fish. Your hardware setup feeds directly into the AI analysis and advice, making every recommendation specific to your actual system.
Configurable Dashboard
Every system has different requirements—a mixed LPS nano runs differently than a high-demand SPS reef. Coralist comes with preset reference ranges tailored for SPS-dominant, LPS-dominant, and fish-dominated tanks, so you start with sensible targets right away. Customize your dashboard with the exact parameters you care about—Alkalinity, Calcium, Nitrate, and more—and see at a glance whether your water is in the sweet spot with intuitive, color-coded dials.
Stability Index Chart
Corals rarely suffer from a single parameter reading; they suffer from sudden swings. The Stability Index tracks your long-term trends across 1-, 3-, 6-, and 12-month windows and adjusts its scoring based on your livestock type—because what counts as "stable" for an SPS tank is different from a fish-only setup. By highlighting creeping deviations early, it helps you focus on what really matters in reef keeping: flattening the curve and keeping your water chemistry steady.
AI Water Test Analysis
Instead of wondering how a set of test results interacts, Coralist evaluates your numbers together, not in isolation. The app highlights your overall water state, explains potential impacts on your corals and invertebrates, and provides practical, grounded advice on what adjustments to make—or when it's best to leave things alone.
Context-Aware Assistant
Ask questions without re-explaining your setup every time. The assistant already knows your tank volume, parameters, equipment, and livestock—so you can use it to build or adjust a dosing program, plan maintenance tasks, or check at your local fish store whether a new fish or coral is compatible with what you already have.
Interested in trying Coralist?
We're in the final stretch of our closed beta. If you'd like early access and are willing to share feedback on how Coralist fits your routine, we'd love to hear from you.