AquaticLog is gone. ReefLog is gone. Spreadsheets are a nightmare on a phone. ReefDeck is here — purpose-built for reefers who track water parameters, run the numbers on dosing, stay on top of maintenance, and keep a real history of their tank.
Built around what actually matters: accurate records, trends you can see, and alerts when something drifts outside the ranges you set.
Log all your parameters — alkalinity, calcium, magnesium, salinity, pH, temperature, nitrate, phosphate, and any custom parameters you define. Every reading timestamped, searchable, and chartable.
See how each parameter moves over 7, 30, or 90 days. Spot a creeping alk swing before your corals do. Your logbook finally tells a visual story.
Set recurring routines — water changes, two-part dosing, testing, skimmer and filter cleaning — and ReefDeck tracks what's due and what's overdue. Optional browser reminders nudge you while the app is open or installed. You set the schedule; we just keep time.
Work out how much supplement raises alkalinity, calcium, or magnesium to your target — scaled to your exact water volume, pre-filled from your latest test. It does the arithmetic on the dose rate from your bottle; no recipes baked in, no guessing. Log the dose straight to your journal.
Set your own acceptable range for each parameter. ReefDeck flags readings outside that range — no advice, no "dose X," just "this is outside the range you set." You decide what to do.
Catalog every frag, fish, and invert. Add photos stored on your device, notes on placement and color, purchase date and price, and watch your collection grow over time.
Log every dose, water change, equipment service, and tank observation with a timestamp. No more trying to remember if you dosed two-part yesterday or the day before.
Your data is yours. Export everything to JSON for a full backup or CSV to open in Excel. Import it back any time, on any device. You are never locked in.
Install to your phone's home screen. Works in the fish room without Wi-Fi. Service worker caches the app — log readings while your router is rebooting.
Running a display tank, a frag tank, and a QT? Give each tank its own profile and switch between them instantly. All data stays separate and organized.
The deep Abyssal Green dark theme is built for dim fish rooms and late-night dosing. Prefer something brighter? Flip to the Ocean Mist light theme in Settings — same data, your choice, remembered on your device.
Currently in development: Pro tier adds encrypted cloud backup so your logbook survives a phone replacement and syncs across devices. Sign up to be notified when it ships.
ReefDeck is client-side first. We designed it this way intentionally — we do not want your water chemistry data, and we do not hold it. Everything lives in your browser's localStorage.
The full logbook — parameters, charts, inventory, journal, exports — is free forever. Pro adds cloud sync, multi-device access, and priority support.
Join the waitlist and get early adopter pricing locked in. No spam — one email when Pro goes live, and the occasional product update.
No spam. Unsubscribe any time. We respect your inbox like you respect your salinity.
We built ReefDeck because serious reefers deserve better than a dead app or a spreadsheet. Here's what happened to the alternatives.
AquaticLog.com — long the go-to reef tracking site — now redirects to a blank homepage. Years of community data and features, gone. ReefDeck is the modern replacement built from scratch for 2026 reefers.
ReefLog.app's SSL certificate expired and the site is unreachable. If you were a ReefLog user looking for a new home for your parameter logs, you can import your exported data directly into ReefDeck.
CoralVue HYDROS and Neptune Apex are excellent hardware controllers — but their software only works if you buy their equipment. ReefDeck works with any test kit, any controller, any tank. Zero hardware dependency.
We built the logbook we wish had existed when we started reef keeping. Water parameter trends, coral growth records, dosing notes — all in one place, on your phone, working offline.
Tracking your frag collection, purchase prices, growth over time, and placement notes in a spreadsheet is painful. ReefDeck's inventory gives every coral its own card with photos and a full observation history.
Stop doing two-part math in your head. ReefDeck's dose calculator scales the dose rate from your own supplement to your exact water volume to hit your alkalinity, calcium, or magnesium target — pre-filled from your latest test. Pure arithmetic, your numbers, no recipes assumed.
Forgot whether you dosed yesterday or refilled the ATO? The maintenance scheduler tracks every recurring routine and flags what's overdue, with optional browser reminders. No subscription, no server — it runs right on your device.
The tank journal feature lets you write timestamped observations — a coral bleached, a fish was acting odd, you changed your skimmer setting. The kind of notes that save tanks when something goes wrong.