Catch problems before your corals show them.
Every device. Every tank. One Cora.
Readings from your reef equipment, your own tests, ICP results and notes come together in one place. When a value moves, you see what changed around it before you decide what to do.
Use it on your phone with Cora Mobile, or on Cora Max, a wall screen beside your tanks.
From our own tanks
Two things Cora caught that the usual alerts would have missed.
Inside the limits, still wrong
Every reading was within its alert range, so nothing went off. Cora still noticed alkalinity falling fast and salinity shifting quickly, and flagged both while there was time to act.
Don't dose on one number
An ICP test showed several trace elements on the low side. Salinity was low too. Cora put the results side by side and suggested raising salinity first, because those elements rise with it, instead of dosing each one.
A wall screen beside your tanks
Mount it next to your tanks and check alk, salinity, pH and temperature from across the room. Say “Hey Cora” to ask a question or switch something on.
All your tanks side by side
Cora Max talks to your gear over your home Wi-Fi. Each tank gets its own gauges and trend lines, and you can start feed mode, switch outlets or pause a pump from the same screen.
Alerts, tests and maintenance on your phone
Set up your tanks and gear here. Log tests and water changes, get alerts, and ask Cora about your numbers.
Connect the equipment you already use
Your equipment keeps its own settings. History and alerts live in Cora Cloud, so they're on your phone too.
Cora Maxmonitors and controls your equipmentCora Cloudhistory and alerts
Cora Mobileyour tank, anywhereSwipe the diagram to explore →
Sensors for the room around your tanks
A compact sensor for the room where your tanks are. It also reads your equipment on your home network, so your tank stays reachable even when no screen is on.
Room CO₂
Room CO₂ in ppm, with its trend. High room CO₂ is a common reason pH stays low.
Room devices
Switches air conditioning, heaters and fans by infrared, and Zigbee outlets on the wall.
Wireless leak detectors
Place them on the floor and next to the sump. Cora alerts you when they get wet.
Readings, tests and notes together
Did alkalinity move after the last water change? Is it the probe or the tank? Is a dosing container about to run dry? Probe readings, test results, ICP reports and your journal are shown together, so you can see which changes happened at the same time.
Fewer false alarms
A single odd probe reading doesn't trigger an alert. It's checked against the trend and your other equipment first.
Understand what changed
Reef Buddy sums up each morning what moved overnight. ICP results sit next to your own tests, and you can ask Cora Assistant about any of it by text or voice.
Rules and alerts
Set rules that act for you, and get a warning before a dosing container or ATO reservoir runs dry.
Cora helps you read your own data. It doesn't replace a test kit, your equipment's own safety features or your judgment.
Built by reefers
We keep reef tanks too. Cora grew out of problems on our own tanks, and we try every new feature there first.
No extra hardware needed
Cora Mobile works on its own. Cora Max and Cora Hub are optional.
In your language
Cora Mobile, Cora Max, alerts and reports in English, German, French, Turkish, Italian, Spanish and Polish.
Your data
Export your data or delete it anytime.
Independent
We don't sell pumps, dosers, lab tests or supplements. When a number moves, our advice isn't there to sell you one.
Start with the app
Connect your controller or log your first test. New readings are compared with your tank's recent history, and unusual changes are flagged.