How to connect Xiaomi aquarium to your phone: a guide to setting up

Xiaomi’s smart aquarium is not just a fish tank, but a complex technical device that requires the right initial configuration to work. Owners often face difficulties at the interface stage of the gadget with a smartphone, since standard Bluetooth connection methods work differently here than in headphones or speakers. The main task of the user is to integrate the equipment correctly into a single Mi Home ecosystem to be able to remotely control lighting, feeding and water filtration.

The connection process depends on the regional version of the device firmware and the server in the application, and errors at this stage can cause the aquarium to be visible locally, but not be able to transfer data to the cloud or perform automation scenarios. It is important to understand that the stability of the connection directly affects the life of electronics and the safety of the inhabitants of the reservoir.

In this article, we will discuss all the stages of preparing, configuring and debugging the system, you will learn how to avoid common network conflicts and why some models require a special approach to choosing an access point. Proper initialization of the device ensures that there are no problems with feeding timers and temperature in the future.

Preparation of equipment and software

Before starting the synchronization procedure, you need to make sure that all components of the system are in good condition and ready for operation. Xiaomi’s smart aquariums, such as the popular Mini Fish Tank or Smart Fish Tank Pro models, require a stable power source and a charged mobile device. Lack of preparation often leads to interruption of the process of finding the device in the early stages.

You will need to download the official Mi Home app from a trusted source, whether it’s the Google Play Store or the Apple App Store. Make sure your smartphone has Bluetooth and geolocation (GPS) modules enabled, as current versions of Android and iOS operating systems require location access to scan peripherals using the BLE protocol.

  • 📱 Install the latest version of the Mi Home app and log in to your Mi Account.
  • 📶 Connect your smartphone to a 2.4GHz Wi-Fi network (5GHz networks may not be supported by your device).
  • 🔌 Make sure the aquarium is connected to the power grid via the original power adapter.
  • 💡 Check the status indicator on the body: it should flash, signaling the pairing mode.

⚠️ Warning: Before dipping electronics in water, make sure all cables are dry and the connectors are tightly closed with plugs.

Special attention should be paid to the versions of your phone's operating system. For the correct operation of Wi-Fi Direct encryption protocols, it is recommended to use Android 8.0 and above or iOS 12 and above. On older devices, you may have problems recognizing the digital certificate of the aquarium.

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Use a smartphone with a screen size of at least 5 inches for comfortable management of interface settings, as controls can be small.

Registration of the device in the Mi Home application

The process of adding a new gadget to the Xiaomi ecosystem is standardized, but has its own nuances for aquariums. After launching the application, you need to go to the Devices tab and click the add a new device button, usually located in the upper right corner of the interface, the system will automatically start scanning the surrounding space for available gadgets for connection.

If the automatic search didn't work, you can use manual mode. In the application search bar, type in your device model, such as Smart Fish Tank, and select the appropriate item from the drop-down list. It is important to choose the right model, since the firmware for different versions of aquariums can differ in functionality and control interface.

When you first connect, the app will ask for permission to access the LAN and Bluetooth, which are critical to transfer the password from your router directly to the aquarium chip, and without granting these rights, the setup process will be interrupted during the confirmation phase.

ParameterRecommended valueImpact on work
Wi-Fi frequency2.4 GHzEnsures compatibility of the aquarium module
encryption protocolWPA2-PSKGuarantees a secure connection
Router modeAP Mode / InfrastructureNecessary for data transmission
Distance during settingLess than 2 metersIncreases the speed of key transfer

After choosing a model on the smartphone screen will appear QR-code or instruction for activating the pairing mode.In some cases, you need to press and hold the function button on the aquarium body during the course of the operation. 5-7 seconds before the characteristic beep or change in the rhythm of the flashing indicator, which puts the device in configuration mode.

📊 What type of connection problem do you have?
Can't see the device.
Wi-Fi network error
No texting code coming in.
It works right away.

Network connection settings and frequency ranges

The most common reason for connection failure is incompatibility of Wi-Fi frequency bands. The wireless communication modules installed in Xiaomi aquariums operate exclusively in the 2.4 GHz band. If your router broadcasts the network only in the 5 GHz band or combines both bands under the same name (Smart Connect), the device may not find the network or may not be able to pass authorization.

To solve this problem, it is recommended to temporarily divide the networks in the router settings by assigning a unique name (SSID) to the 2.4 GHz network, different from the 5 GHz network name. After separation, connect the smartphone to the 2.4 GHz network before starting the procedure for adding the device to the Mi Home application.

The Aquarium supports standard encryption protocols, but conflicts can arise when using corporate networks or complex filtering schemes over the Internet. MAC-In the home, you can use standard encryption. WPA2.

Recommended router settings for Xiaomi Smart Home:


Channel Width: 20 MHz (for better range and stability)




Channels: 1, 6 or 11 (least loaded channels)




DHCP Lease Time: 120 minutes (or more)

⚠️ Note: Do not use Guest Networks to connect smart homes, which usually have isolated ports, which prevents normal communication between the aquarium and the control server.

If the Wi-Fi signal at the aquarium installation site is weak, the device can connect intermittently, in which case consider installing an additional repeater or moving the router closer to the installation point, stable ping is the key to timely activation of the filtration cycle and feed.

☑️ Network parameters verification

Done: 0 / 5

Interconnection and password entry

When the preparatory steps are completed, the key point begins - the transfer of credentials. The smartphone screen will display a field for entering a password from your Wi-Fi network. The Mi Home application usually substitutes the saved password automatically, but in case of an error, it is recommended to enter it manually, carefully checking the character register and the presence of unnecessary spaces.

When you press the "Connect" button, you start the data transfer process, which is when the phone creates a direct connection to the aquarium, the screen can display the progress bar as a percentage, interrupting this process, for example, by switching to another screen or an incoming call, can cause a malfunction, and the procedure will have to start again.

Successful connectivity is confirmed by changing the status of the device in the list of gadgets on the "Online" and the lighting of the constant light on the aquarium indicator (or its transition to operating mode). Now you can rename the device, for example, to "Aquarium in the living room", and assign it a room for easy control through scripts.

In some cases, especially when using an iPhone, the system may request confirmation of a new device's setup via iCloud Keychain.This is a normal security procedure that allows passwords to be synchronized between Apple devices. For Android users, the analogue is saving a password in a Google Account.

What to do if the password is not accepted?
If the system writes “False Password” even though you are sure it is correct, try temporarily changing the router password to a simpler one (numbers and Latin letters only), plugging in the device, and then returning a complex combination.

Diagnostics and elimination of connection errors

Even if you follow all the instructions, there can be errors, the most common of which is a timeout connection, which means that the aquarium could not get a response from the router in the allotted time, the cause could be a weak signal, channel overload or blocking from the antivirus on the smartphone.

If the indicator in the aquarium flashes red or blue in non-standard mode, this is a signal of an internal error, in which case the effective method is a complete reset of the device to the factory settings. This usually requires holding the reset button (or a combination of buttons) for 10-15 seconds before the beep.

  • 🔄 Restart your router and smartphone before trying to connect again.
  • 📵 Turn off the mobile internet (3G/4G/5G) During the setup, leaving only Wi-Fi.
  • 🔒 Check if the router is running a speed limit for new devices.
  • 📲 Remove the Mi Home app and install it again by clearing the cache.

It is important to distinguish between network error and device error. If the aquarium is not visible even in Bluetooth search mode, it may have lost its internal battery (if it is available for storing settings) or a failure of firmware, in which case only flashing through special engineering utilities will help, which requires contacting the service.

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90% of connection problems are solved by splitting 2.4/5GHz Wi-Fi frequencies and turning off the VPN on the smartphone during setup.

Advanced settings and automation

Once successfully connected, you can fine-tune your aquarium, set a schedule for lights to be on and off, mimicking natural daylight, which is good for fish and plant health, and adjust water filtration intensity and temperature (if the model supports heating).

Integration with other smart home devices allows you to create complex scenarios, for example, when leaving home (the geolocation of the phone shows a distance from the base), the aquarium can go into night mode, dimming the lights and reducing the noise of the pump.

Regular updates to the device’s firmware are an important part of maintenance: developers periodically release patches that improve connection stability and add new features; notification of a new version of the software appears on the device card; it is recommended to update when the aquarium is in close proximity to the router.

⚠️ Warning: Never turn off the aquarium power during the firmware update process, which can cause permanent software damage and turn the device into a brick».

Using voice assistants like Alice, Siri, or Google Assistant, you can control your aquarium with voice commands, and you can link your Mi Home account to the appropriate service in their apps, and after you link it, you can say, "Turn on the lights in the aquarium" or "Feed the fish."

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To extend the life of LEDs, adjust the smooth lights on and off (dawn and sunset mode) in the advanced device settings.

Frequently Asked Questions (FAQ)

Can you manage a Xiaomi aquarium without the Internet?
Local control is only possible if you are on the same Wi-Fi network with the aquarium. Remote control over the mobile Internet or the use of voice assistants and scenarios requires constant connection of the aquarium to the global network.
The aquarium is not connected to the 5 GHz network, what to do?
Wi-Fi modules in Xiaomi smart home devices only work at 2.4 GHz. You need to configure the router so that the 2.4 GHz network is active, and connect the phone to it during the device setup.
How to reset the aquarium settings to the factory?
Usually, to reset, you need to press and hold the function button on the device body for 5-10 seconds before changing the indication. The exact sequence depends on the model, check the instructions for the particular device.
Why does the app write “Device Offline” even though it’s enabled?
This can be due to an unstable Wi-Fi signal, a change in the router password, or temporary failures on Xiaomi servers.Try to restart the router and the aquarium itself (turn off the socket and turn on again).
Does the aquarium support the work with the server "Russia"?
Most current Xiaomi global devices work with any region, however, some specific models may require switching the region in the Mi Home app settings to China or Europe for full functionality.