Cora Help
Everything you need to run your reef with Cora. Pick where you are:
- New to Cora MobileCreate your account, add your first tank, and get readings on screen.
- New to Cora MaxFirst run, pairing, and getting your tanks onto the big screen.
- Build your dashboardChoose a layout, add widgets, and arrange them the way you think.
- Resolve an issueReadings stopped, a device went quiet, or an alert is not clearing.
The two halves of Cora
Cora Mobile is the phone app. It is where you set almost everything up (tanks, devices, dashboards, alerts, dosing products), and it is what you carry when you are away from the tank. On your home screen the icon is simply Cora.
Cora Max is the wall-mounted command centre for the reef room. It shows the same tanks and the same live data on a screen you can read from across the room, and it takes voice.
They share one account, so your tanks, readings, devices and records are the same on both, and you do not set them up twice.
Some things stay with the screen they belong to. Each screen keeps its own dashboard layout, and settings that describe a particular screen (Wi-Fi, brightness, audio, wake word, child lock) belong to that screen alone. See What is shared and what is not.
What Cora adds to a controller
Cora shows you a number together with what it depends on: where it came from, and how old it is.
Every reading carries where it came from and how old it is. When two sources disagree (a probe against a test kit, a doser against your ICP results), Cora says so rather than quietly averaging them. And when something drifts, Reef Buddy tells you in the morning instead of waiting for you to notice.
Finding your way around
- The five tabs: a tour of Cora Mobile in two minutes
- The Cora Max home screen: what everything on the big screen means
- Glossary: tank, source, widget, saved design, threshold, and the rest
Keeping the tank
Beyond readings and dashboards, Cora keeps the rest of the job in one place:
- Automations and scenes: rules that run by themselves
- Dosing: product strengths, the calculator, and consumption
- Maintenance: recurring jobs with reminders
- Livestock: what you keep, and what became of it
- Guided journeys: cycling a tank, or working through a problem
- Activity: what happened to your equipment, and what caused it
- Going away: a plan you can hand to a tank sitter
- Your data: exports, and deleting your account
- Signing in and account recovery: passwords, verification, and a wrong email address
- Getting help: reporting a problem, and what is sent with it
Your equipment
- Controlling your equipment: outlets, pumps, dosing heads and testers
- Probes: mapping a controller's probes, and recording calibration
- Consumables: refill alerts for reagent, containers and reservoirs
- Scheduling equipment: day programs for pumps, copying them, and viewing a gyre's schedule
- More than one Cora device: which one answers voice, which one polls
On the big screen
- The Reef Room: every tank at once
- Devices and device health: what Cora Max sees, and its own diagnostics
- Reef Buddy and reports: the briefing and your lab work at the wall
- Controlling equipment from Cora Max: device pages at the wall
- Activity on Cora Max: what was carried out, refused, or never confirmed
- Updates and recovery: how the screen keeps itself current
Written for Cora Max 0.28.60 and Cora Mobile 0.5.70. Last checked 2026-09-17.
Still stuck? Email cora@coraiq.tech and we'll help.