ReefGaugeEvery number, with its range and its day.
Each reading sits beside its target range and a line of its last 24 hours, so a slow drift shows up before it becomes a problem.
Coming early 2027: The launch list hears the introductory price first
Your reef,
at a glance.
A 10-inch touchscreen for the wall beside your reef aquarium. It reads your controller, your automated tester and your ICP results, works out each day's doses, and shows the whole reef the moment you walk in.
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- No subscription
- Free phone app
- Keeps working if the internet drops
- Alarm volume that never goes to zero
Reads the gear you already own
- Neptune Apex
- Trident & Trident NP
- Red Sea ReefBeat
- Your ICP lab results
- HYDROS & GHLPlanned
01 At a glance
Eight gauges. One look the moment you walk in.
Temperature, pH, salinity, alkalinity, calcium, magnesium, nitrate and phosphate as ring gauges, each with its target range and a 24-hour trend line underneath. Green when it's right, amber when it's drifting, red when it isn't.
Tap any gauge for its history.
The last 24 hours, 7 days or 30 days, with the target band, every dose and water change marked along the bottom, and the low, average, high and direction underneath.
The sky outside, in the corner.
The temperature in the corner takes on the weather: sun, cloud, rain, a clear night. Tap it for the next 24 hours and the week ahead, with rain and wind, because a storm on the way is a power cut on the way. Inside, a room-air sensor watches the CO2 the tank breathes (high room CO2 pulls pH down), alongside temperature and humidity.
Reminders, ticked off with a tap.
Filter socks, skimmer cup, water changes: due jobs show on the ticker along the bottom of the screen, and a tap ticks them off. Log a water change and its reminder resets too.
02 Alerts
When something's wrong, you'll know.
When a reading from your controller leaves its range, a pop-up takes over the screen, the speakers sound, and your phone hears about it too.
- Temperature and pH sound at any hour. So does the controller itself going quiet.
- Quiet hours for the slow movers. The slower-moving readings wait out the quiet hours you set (10 pm to 7 am out of the box) and show without the sound.
- Your limits. You set where each reading alarms, and a slow drift inside the range gets a quiet warning before it becomes an alarm.
- One tap to acknowledge. It retreats to the ticker along the bottom until it's fixed.
03 Dosing schedule
Today's doses, worked out for you.
Tell it how much water the tank holds and how you dose. From your Trident, your test kits and your ICP results, ReefGauge works out each bottle's daily amount, keeps it in step as the readings move, and puts it on a calendar.
Every day's doses, a month at a glance.
Doses given by hand, with their amounts, ticked once they're in. A pump to set to a new amount, in blue. Tap a day to mark doses done or change them.
What's due, on the home screen.
Today's doses still to give, and the days ahead, beside your gauges. Tap it for the calendar.
Every amount explains itself.
Each bottle says what its amount rests on: the reading, the target and your method's own rule. Small changes apply on their own, up to a limit you choose (10% a day out of the box); anything bigger waits for you to accept it.
Your method
Two-part, Red Sea Foundation, Triton Core7, Balling, All-For-Reef, B-Ionic, Aquaforest, ATI Essentials Pro, kalkwasser or a calcium reactor. An ATI lab report's own dose advice is read straight from the PDF, and Reef Moonshiners dosers paste in their dose summary.
Never too fast
Corrections are spread over days, so no day moves alkalinity more than 1 dKH, calcium more than 20 ppm or magnesium more than 100 ppm. A reading dosing can't explain holds the amount and asks for a retest.
Your call
Skip a day, give a dose on another day, pause a bottle for a week or two, or set your own amount until the next test. Every dose has a Change button.
Advice, not control
ReefGauge never drives a dosing pump. When a pump's amount should change, it tells you what to set it to, and you tick it off once you have.
05 Phone app
Your reef, in your pocket.
The free ReefGauge app for iPhone and Android. Type in the code your display shows, once, and the tank goes wherever you do.
Alarms, wherever you areWhen the display raises an alarm, your phone gets it too. Temperature and pH arrive as urgent notifications.
Dose remindersToday's doses at the hour you choose, and an evening nudge for any not yet given. Tick them off from the phone.
The whole tankEvery reading and its trend, the dosing calendar, your ICP results, and logging a dose, a test or a water change.
No passwordSign in with a code we email you. Several phones on one display, or several displays on one phone.
04 Chemistry
Chemistry that means something.
Your lab's results, on dials.
Send your lab's PDF report from your phone, or paste the results. Twenty-plus elements are shown against natural-seawater reference bands, with anything outside them flagged, and you see what it read before it saves. Any element it finds low can go straight onto the dosing schedule.
Every dose and water change, in one place.
Log doses, test-kit results and water changes on buttons named for what you actually use (two-part, Balling, kalkwasser, Red Sea Foundation, Triton Core7, ESV B-Ionic, All-For-Reef, Reef Moonshiners), keep the whole history together, and get a reminder when a hand test is due.
06 Works with
It doesn't replace your controller. It shows you what it knows.
ReefGauge talks to the gear on your network directly, with no cloud in the middle.
Neptune Apex
Temperature, pH and salinity from your Apex probes, plus Trident and Trident NP results as they land — alkalinity, calcium, magnesium, nitrate and phosphate.
Red Sea ReefBeat
Over your own network: ReefMat roll remaining and ReefRun pump state — skimmer cup full? You'll know. ReefDose, ReefATO+, ReefLED and ReefWave show their basic status.
Your ICP results
Send your lab's PDF report or paste its results from your phone, and see every element against its seawater reference band, with anything outside it flagged.
HYDROS & GHL
CoralVue HYDROS (through its official API, which needs the internet) and GHL ProfiLux 4 (over your network) are planned.
On the roadmap
07 Setup
From the box to your reef. No computer needed.
Hang it
Mount it on the wall beside the tank and plug it in. It boots straight to your reef: no desktop, no login, no cursor.
Set it up by touch
Wi-Fi, location, tank name, controller, equipment, and your tank's size and how you dose, in a few minutes, on the screen itself.
Glance
Every number, every trend, today's doses, and an alert that's hard to miss when something is wrong.
08 Ownership
One price. No subscription.
No subscription
You buy the display, it's yours, and it never needs a subscription. The phone app is free too.
Free updates
Software updates are free and install from the settings screen.
Readings stay home
Your tank's numbers stay on your own network unless you link the phone app or start a support session. What leaves the display
Works offline
Your controller, your ReefBeat gear and the display talk over your own network. If the internet goes down, the reef screen, its alarms and the dosing schedule keep working.
09 The display
Made for the wall, not the desk.
10-inch touchscreenMounted on the wall beside the tank. Full hardware details at launch.
SpeakersAlarms have their own volume, and it can't be turned down to nothing.
A ticker along the bottomAnything that needs attention and the jobs that are due, scrolling past.
Dims at nightSet the brightness, and a dimmer screen for the evening, from the screen itself.
Questions
The short answers.
Do I need an Apex?
No, but it's the best case. With an Apex and Trident the numbers arrive on their own. Without a controller you type in your test-kit results: they color the gauges and go on the charts (typed results don't sound alarms). Your test-kit results drive the dosing schedule too, and you still get ICP results, the dosing log, maintenance reminders and the weather.
Does it need the internet?
For the weather, registration, software updates, the phone app and a remote-support session you start yourself. Your controller, your ReefBeat gear and the display talk over your own network; if the internet goes down the reef screen keeps working.
Is there a subscription?
No. You buy the display, it's yours, and it never needs a subscription. Software updates are free and install from the settings screen.
Can I see it from my phone?
Yes. The free ReefGauge app for iPhone and Android shows every reading and trend, brings alarms and dose reminders as notifications, and logs doses, tests and water changes. Link it with the code from the display's settings.
Will it run my dosing pumps?
No. ReefGauge works out what to dose and reminds you, but it never drives a pump. When a pump's daily amount should change, the schedule says what to set it to, and you tick it off once you have.
Does it follow my dosing method?
It follows the method you pick in setup. Triton Core7 starts from Triton's own rule (2 mL per 100 L, then adjusted by alkalinity); an ATI report's printed dose advice is read from the PDF; Reef Moonshiners dosers paste in the summary from their own Moonshiner's tool. Two-part, Balling, Red Sea Foundation and the rest are worked out from your readings.
What about my other gear?
HYDROS and GHL are planned. If you run something else, tell us what — the list of what people own decides what comes after.
When, and how much?
Early 2027. One price, no subscription; the price is still to be announced. The launch list hears first, and hears about the introductory price.
Be first to hang one.
Launch news, the introductory price, and a first look at the display on the wall.
We'll email you once to confirm. Launch news and the introductory price only; unsubscribe in one click. Privacy